New construction: approximately 280m² plus basement - your suggestions

Be careful with compromises. You don't want it to look like trying but failing. One element and the right one. If you like the shops, then take that and leave out the arches. The garage doesn't look pleasing on the house like this. At least I lack the imagination there.

First of all, I would immediately swap ours ;-) But I don't understand the utility room on the ground floor either. Probably just a cloakroom, right? But given the other dimensions, it would be too small for me. Also, the bathroom on the ground floor would be too small for me, especially considering possible care needs. I also find the pantry strange. Ours will be small too, but this is extreme. How exactly do you imagine it? Why don't the children get a bathtub and you even have a sauna? Or are they supposed to use your bathroom normally? We are building quite old-fashioned, so it doesn’t bother me that it looks different from all the other houses being built at the moment. But I understand what the others mean. The east view with the mix of shutter windows and the small windows to the left is somehow really an acquired taste. Why not at least have all windows on the east with shutters? Overall (for me as a complete layman) the rounded windows on the south and the two east variants also look like three different styles that somehow don’t quite go together. If you like it and you had a reason for it, then leave it as it is, but regarding the exterior you are definitely very far from the current mainstream.

I just told the children that they will get a bathtub. :) We parents really never bathe, the kids do every week. And by doing without the bathtub we can place the toilet in that spot and maybe even make the shower a bit bigger. We’ll put the bathtub upstairs in the children’s bathroom. That relieves the parent bathroom and solves the toilet-window problem. Thanks for the food for thought.

Be careful with compromises. You don't want it to look like it was wanted but couldn't be done.
One element and that right. If you like the shutters then take those and leave out the arches.
The garage won't look pleasing on the house like that. At least I lack the imagination there.

We are now making a start without arches and with bigger windows and shutters.
Many thanks to you.

..if you consistently share your knowledge/insight/thoughts. You are on a good path

Ok, with knowledge/insight I’m often thin, but I do have abundant thoughts.

I am a bit overflashed by the views:

It’s also too much of everything for me, so my question to the OP was whether the architect can actually achieve what the OP wants. At least I don’t see that in the drawing. This is not a criticism of the OP, rather of the planner.
There shouldn’t just be an answer from you saying “unfortunately” and I can also handle a counterreaction. I generally like clear words, so I say what I don’t like and also about this house plan. But I do actually try to make the OP understand my personal view so that it might help him, I don’t know, and in the end he has to decide anyway.
Polite applause or a “pretty nice” would actually do more harm to me with my project, where I might need a little push to get out of my maybe stuck way of thinking. Even if answers are similar or sometimes repeat themselves, they can ultimately not do harm and I assume that the respective writer wanted to help me. He doesn’t know me and one more opinion can’t harm me in my opinion, which is why I wouldn’t want to miss either.
Maybe with my harsh post I have now played myself up as an authority and I don’t want to exempt myself from occasionally being wrong, but I do have the impression that people always want to help the questioner, whether he is building a luxury house or a garden shed.
I hardly use any forums except this one and would actually find it enriching if you didn’t just participate as a lurker, because every additional opinion can help someone and if “old-fashioned” pleases you as you say, then that’s just as valid, since we thereby get a rather broader field of opinions from which an OP can then choose. Taste is always individual – luckily!

that goes on my “I-like-myself-wall.”

.....I hope that’s something like a place of honor o_O oh well, I’m just going to imagine that now!

We have a TV show called "your home made perfect" where 2 architects compete and redesign a family's house according to their wishes. As a viewer, everything is shown in 3D: the people + architects stand virtually inside the house and bam, walls disappear, skylights and light corridors appear, furniture shifts. In almost every episode, an architect explains why extensions often don’t work, why square meters really aren’t that important, and what you should pay attention to if you want a certain functionality. Each episode focuses on something different, e.g. "more light", "space for children to play", "more nature", "more storage". And no matter the topic, it somehow always turns out that adding square meters is not the best option. And this becomes visible through the quick 3D virtual "renovations". Why is such a large open space important to you? What do you expect from it? Especially if the budget could become a problem. Square meters hardly impress, but functionality does.

Our layout is similar, parents on a different floor than the children, which is great, but for us it's the other way around. We are at the very top, the children in the middle. The practical reason is that they don’t have to pass by us with friends, at night, or go to the fridge again. When I look at a floor plan, I often start from the entrance. Entrance area, 5 people, shoes, jackets, gym bags, moped helmet, but hardly any space for a coat rack, instead 5 doors in the hallway. With the terrace, you won’t be happy in the end without a fixed roof. You can’t leave anything outside in the wind and in autumn, so every year you have to carry terrace furniture up and down to the basement or garden shed. Of the external style variants, unfortunately none is mine, but it doesn’t have to please me, it has to please you. These little quirks also have to please you in 10 years. I once had an apartment with such a porthole in the hallway, I hated it, it didn’t bring any light, you couldn’t put anything in front of it, a flower didn’t work either, and when moving out it was a pain to wallpaper around it :D