Floor plan single-family house, ~180m², basement with gable roof

So, now here's my two cents

Pantry:
I am definitely a fan of direct access from the garage into the pantry, if possible. However, you should keep in mind that special fire protection requirements apply to the door! Otherwise, it definitely has its charm, even though it is often rated negatively here. However, this is how it is here: due to the additional door, you have almost no more space in the pantry. Beyond that, I personally would be bothered if there is no window in the pantry. I use the pantry a lot, and especially in winter, it’s like a second fridge if I tilt the window open. For example, cookies can cool down wonderfully there without interfering with kitchen activities.

Kitchen:
I consider the refrigerator in the niche, far away from the actual kitchen action, a major planning mistake. Didn't your kitchen planner say anything about that? Then I would almost consider getting a different kitchen planner. Or your criterion was: we want to walk so many kilometers while cooking that we can eat without guilt afterwards! From that perspective, the distance of the freestanding kitchen unit (I wouldn't call it an island now) to the kitchen row on the wall with a proud 1.8 m would make sense. Otherwise, no. As the kitchen is now, you will be walking yourself to death. As I said, if that is not your intention, I would plan the kitchen completely differently:
Plan the fridge into the action: either integrate it into the wall row, or extend the pantry and put the pantry exit where the fridge is now and the fridge where the door currently is (you’ll also get more division of WF, entrance hall, pantry, and WC downstairs).
Make the freestanding kitchen unit a real island that deserves that name: so away from the wall! Depth 125–130 cm, so you have space for 60 cm deep cabinets on both sides and space for pipelines in the middle. I would place the island about 1–1.5 m away from the wall, in the middle of the room (you have enough space!), thus shifting the cooking activity more to the center of the room. A fridge where the pantry door is now or even where it is now is easily accessible. Then you can also generally consider whether this wall might become a functional kitchen area and, for example, put the oven (if planned at hip/chest height) and steam cooker (if desired) there. The pantry door can then wonderfully be integrated into such a kitchen front.
Other advantages: you can plan the terrace door freely, possibly make it bigger, and someone coming in from outside does not have to walk through the whole kitchen first but can go straight into the living area and won’t disturb the kitchen crew.
I am personally a fan of the stove on the kitchen island because you can cook together so nicely. But that really comes down to taste. In any case (whether island with or without stove), I would plan a small additional sink in such a generously sized island. That makes work much easier because you don’t have to leave the work area every time for finger washing, rinsing cloths, washing vegetables, filling pots with water, etc. A small sink is sufficient there; you have the main sink on the kitchen row at the wall, and larger tasks (washing salad, cleaning pots, etc.) are done there.

WF, Entrance Hall, Pantry, WC:
I find the layout, let’s put it politely, suboptimal. You’re wasting so much space!
The entrance hall is separated from the living area by doors, so what’s the point of having an extra windbreak? Either you design the area around the stairs open to the living area (which also has its charm), or you leave it as it is, but then you don’t need an extra windbreak. I would move the garage a bit more to the north (if possible), give the pantry a window, move the entrance door to the right, where the WC is now and is basically in the middle of the room. Put the toilet on the right wall of the garage. Then the convoluted entrance area is relieved, you can dimension the pantry differently and remove the bottleneck between WF and entrance hall mentioned above. Overall, there is more space in the entrance hall/WF because the toilet is no longer in the middle. You might also consider planning the WC a bit more elongated and then plan the pantry as I suggested. I think this way you can use the space much more effectively.

Laundry in the basement:
Personally, I find that complete nonsense: bringing dirty laundry downstairs (well, you plan a chute, that goes faster), then carrying the washed laundry back upstairs to hang it outside, then back down again to iron, and finally back up again to the upper floor to put it away. Phew...
I already notice you are planning a very ambitiously sporty house.
I am lazier...
In the past, the laundry room was in the basement because it was usually damp there. With modern appliances, that’s no longer a problem, and I would definitely plan a small utility room on the upper floor with washing machine and dryer and possibly also space to set up a drying rack. You can also combine that nicely with a small second bathroom. Your children are still small but will also become teenagers, and you will notice then that a second bathroom is a blessing!
Do you want to absolutely keep the air space? There would be enough space for such a utility room there. Think about that again.
And if you really want the air space, then let it be a room as well: why separated from the upper corridor? I would then plan it as a gallery and not with a window. But that is also matter of taste.
Overall, I would give up the air space in favor of a utility room/second bathroom and rethink the room layout on the upper floor altogether.

oh yes, and a tip from me:

At the moment, it’s simply trendy to plan a bar area on the kitchen island. I’m a passionate cook and find this elevation, so you can sit there with bar stools, simply impractical! If you like to cook together, you lose one side of the island where you could work. Besides, you can’t design the island as deep, only as deep as you can reach from one side. I don’t know how you planned it, but I always recommend letting the countertop overhang a little on one side and placing two completely normal height stools there. When they’re not needed, I push them under the overhanging countertop and can use the area as a normal work space; if you want, you can also sit there comfortably for a snack or, for example, sit down to chop vegetables. Besides, my little ones don’t like bar stools anyway. For me, it’s a semi-alpine endeavor to climb up on those stupid things, and I’ve already given up on looking elegant doing it in this life... But that’s my personal problem

How do you come to the 2m distance on the left side of the plan? Isn't the requirement either 0 or 3m?

And on the right side of the plan, 3m distance measured from the wall, but with the roof overhang it could also be more. 5m away from the street, the terrain is already about 100 cm higher than at the street and still rising. That will be difficult with a driveway, because the garden exit is supposed to be level – right? And there the terrain is even about 180 to 200 cm higher than in front at the street.

How is the planning situation generally intended? I would consider an architect VERY useful here. Architect, not just a planner from some construction company.

I don’t know the exact distance now but border development applies and IMHO you can move the garage close to the neighbor. The western neighbor, for example, has a distance of 1.60 m to our property. I believe it depends on the height (garage in this case).

For the garage I had in mind a driveway (not entrance) that slopes slightly upwards from the street view.
An architect is not excluded now. Our construction company has built several houses in this development area, all with the same slope. First, let’s see what they say...

oh yes, and one more tip from me:

At the moment, it’s just trendy to plan a counter area on the island in the kitchen. I’m a passionate cook and find this elevation, so you can also sit there with bar stools, simply impractical!
If you like to cook together, you lose one side of the island where you could work. Also, you can’t plan the island to be that deep, only as deep as you have reach from one side. I don’t know how you planned it, but I always recommend letting the countertop overhang a bit on one side and then placing two completely normal-height stools there. When they’re not needed, I push them under the overhanging countertop and can use the area as a normal workspace; if you want, you can also sit there comfortably, have a small snack, or sit down for example to chop vegetables.
Besides, I don’t like bar stools for little ones anyway. For me, it’s a semi-alpine endeavor to clamber up those stupid things and looking elegant while doing so, I’ve already given up for this life…
But that’s my personal problem

So for us, it’s not meant to be a counter but the countertop will simply be extended. Just to be able to cook with the kids as well. Exactly as you described it - that was our plan.

So with us, there won't be any counters, but the countertop will simply be extended. Just so that we can also cook with the children. Just as you described it - that was exactly our plan.

Very good!

Then I am relieved. If it should ever happen that I visit you, then I can sit on the stools very elegantly without having to endure any degrading climbing. Very likeable!

Thank you very, very much for your extensive post.
I have to read through everything and process it first.... it might take a little while since I also have an appointment soon.