Single-family house (2 floors + residential basement + developed attic) approximately 200 sqm - changes

This change in contribution 125 ... what is it supposed to bring for the children's room? 195 cm width under the sloping roof ...nothing. And, this way, not even a small skylight in the bathroom would be possible.

Why no door between the hallway and the all-purpose room? You should try furnishing the all-purpose room. I find that quite difficult.

The master bedroom is very tight with a raw structural dimension of 333 cm .. bed with frame approx. 210, wardrobe with doors approx. 66 cm (Pax with sliding doors), leaving 57 cm clearance.

Attic .. where is the slope? Does the shower fit into the corner? If the 2m line is supposed to be there, then it could get very tight.

A location plan with the garage drawn in would be useful to judge why the entrance door was relocated. That's immediately 90 cm less wardrobe space.

Here now furnished twice as all-purpose room (meaning the windbreak/wardrobe?).
I have also noticed that the master bedroom is going to be tight. I am very conflicted about this. Ours now is comparably tight. We notice it but it doesn’t bother us since we don’t spend much time in there. Whether I want to "put up with it" like that forever? Probably we will not have a Pax but rather an Ivar with 50cm depth.
But I will "bring it to trial" again with my wife.
The roof slopes are marked as floor areas. So first area <1m then <2m and then >2m. This is assuming there is no underfloor heating. If that comes and needs about 13cm, then the lines would shift about 11cm inward at a 50° roof.

This change in post 125 ... what is it supposed to bring for the children's room? 195 cm width under the roof slope ... nothing. And, a small roof window in the bathroom wouldn’t be possible either.

Which change? The door? I thought that on the left side of the room there still might be space for a wardrobe (about 1.25m >2m and then another 85 cm >1m) in the corner. And I had missed the width dimension on the right side room. I’ve added it: it’s 232 cm. Of course it’s a narrow room but usable as a children’s room, right? But yes, I also like the other variant much better! The children’s room there is smaller but the rest fits together much better.
I’ve attached the location plan. There is no garage drawn in. At least for now, there will be none. Possibly a carport in the northeast corner toward the street at some point. It could be that for the planning, the house will be moved about 1-1.5 m to the west. The distance to the eastern property should be enough despite the 3m height, since building class 1. If I remember correctly, a 10*10 m house is drawn in.

The question was still open as to why there is no door between the common room and the hallway. The door was always in there. It was important to us as well. Whether this "thermal separation" makes sense, I cannot assess from an energy perspective. Otherwise, I am quite sure that we will not create a hallway where 5 people can get dressed at the same time. So it seems sensible to keep the wardrobe open after all. Although it probably won't be necessary for much longer that we often start all together. What is most important to us, however, is that where you go with dirty shoes and take them off, you "never" get tempted to go there with slippers. That would not be guaranteed even without a door.

By Allraum I mean living/dining/cooking. And why is there only a basement window facing west there?

If a shower starts at 2 m, then it will be tight with the showerhead. If a person who is 180 cm or taller stands there, you are guaranteed to have water splashes on the ceiling.

Attic .. 120 cm depth for the bathroom with a toilet on the children's room wall ... or rather the drain in the wall to the children's room ... no, that won't work.

By "all-purpose room" I mean living/dining/cooking. And why is there only a basement window facing west there?

If a shower starts at 2 m, the shower head area is tight. If a person 180 cm or taller stands there, you will definitely get water splashes on the ceiling.

Attic .. 120 cm depth for the bathroom with the toilet on the children's room wall ... or rather the drain in the wall towards the children's room ... no, that won’t work.

The bathroom(s) currently really only come from my head. Since the attic is being converted as a DIY project (that takes time, as the two younger children first move into the study and the oldest into the spare room), the architect didn’t plan that. But I have now requested it, and he worked on it today. He wants to send it tomorrow evening. Of course, I tried to keep the children’s rooms as large as possible. I hope it still goes in this direction (like the variant I attached). The entire attic peak would still be free there for a platform built-in solution.

All-purpose room (sorry, I knew I had heard that before but was drawing a blank earlier): there is only such a high window facing west because I actually don’t want one there at all. Currently, there is no place for the TV where the sun doesn’t shine on it. I am actually afraid that the living area will become too bright. But the architect and my wife say that the evening light in the west cannot be left completely unused.
And why it now has no door: if there was one, it would probably always be open. You could consider a sliding door. Currently, in our apartment, the kitchen doors are always open and the living room door is only closed when the heater is on. For us, kitchen and living room are not retreat spaces. Everyone has their own room for that. But yes, you could put a sliding door there.

Furnish your all-purpose room ... that will not be easy and the well-intentioned sofa area will then also be a passageway.