Upper floor design - Your help is needed

I'm not sure if it's okay to open another thread with a different question, but in the last few days my wife and I have encountered a "problem" or question regarding the design of our upper floor. First, however, I will answer the questionnaire:

Development plan/restrictions: none known, existing building, two floors allowed
Plot size: 560 sqm
Slope: -
Floor area ratio: -
Floor space index: -
Building envelope, building line and boundary: 3m boundary construction
Edge construction: 3m
Number of parking spaces:
Number of floors: 1.5
Roof shape: gable roof 33 degrees
Architectural style: modern
Orientation:
Maximum heights/limits: -
Other requirements: none known

Requirements of the builders
Style, roof shape, building type
Basement, floors: 1.5 floors + basement as existing building and original building too small. Goal was to give the old room layout of the 1970s building more space on the ground floor as well as to move the entrance to gain space in the driveway width and to place the new stairs to the upper floor above the basement stairs. Requirements for the new upper floor: spacious family bathroom, at least 2 children's rooms, bedroom
Number of people, age: 2 people (32, 26)
Space requirements on ground and upper floors: 230 sqm
Office: family use or home office? Both. When wife goes on parental leave, husband will work 1 day home office
Overnight guests per year: more than 10 times
Open or closed architecture: as open as possible
Conservative or modern construction: as modern as possible
Open kitchen, kitchen island: desired
Number of dining seats: > 6
Fireplace: only with external chimney if budget allows
Music/stereo wall: no
Balcony, roof terrace: no
Garage, carport: garage
Utility garden, greenhouse: -
Further wishes/special features/daily routine, also reasons why this or that should or should not be: wife works shifts, possible problem with dressing room, which is probably planned too narrow anyway

House design
Who created the design:
- Planner of a construction company
- Architect: female architect
- Do-it-yourself
What do you particularly like? Why?: spacious living-dining area, entrance area, children's rooms have a coherent layout and the ground floor is just as we would have realized it in a new building
What do you not like? Why?: "tube room" on the upper floor. The room is basically too much. Two children are planned. The first draft (attached) left space for an equally sized third children's room, which could alternatively have been used as a playroom (to sometimes leave Lego castles or racetracks standing). After the stairs were redesigned, the upper floor inevitably had a different layout. In this context, we wanted to move the bathroom towards the garden to have a normal window and not just a skylight. We also had the bedroom moved towards the garden. According to our architect, this can only be realized because of the requirement for the central ridge beam if we plan this "tube room" between the children's room and bedroom. Now we noticed that the dressing room is quite narrow and you basically stand right in front of the bed when you open the door. In the dressing room, we have on the left side a knee wall of 1.20m and 1.34m further right a height of 2m. So we can place a dresser 1.20m high along 4.50m. On the bed side we would have to put a wardrobe and mirror and would only have 1.30m between the wardrobes. But why, if you have this basically useless room right next to it? Do you have a reasonable idea how to integrate this tube room as a dressing room? Bed will move with us because it's new and has a head height of 1.20m, so it could just fit into the slope ‍♂️
Price estimate according to architect/planner:
Personal price limit for the house, including equipment:
Preferred heating technology:

If you have to give up something, on which details/extensions
- can you do without:
- cannot do without:

Why did the design turn out as it is now? e.g.
Standard design from the planner?
Which requests were implemented by the architect?
A mixture of many examples from various magazines...
What makes it particularly good or bad in your opinion?

What is the most important/basic question about the floor plan summarized in 130 characters: can the room on the upper floor between children’s room and bedroom be sensibly integrated as a walk-in closet?

What else is important: wife works shift work and therefore regularly gets up at unchristian hours, which rarely bothers me but can still be taken into account.

Attached are the first and current drafts. We removed the balcony from draft 1 because we never discussed it, don’t want half a terrace roof from the ceiling, and don’t feel like paying tons of money for something we definitely know will never be used. And kids won’t sneak up there to smoke in 17 years either :D

Site plan plot 213

I wouldn’t really mess around much with the architect’s draft. Somehow, it all makes sense. But of course, you can take a closer look at the small details. I always find it useful to separate the sloping roof with a sliding door at 2 meters to accommodate the shelves ([extratief]) and clothes rails. You could do that here in the dressing room as well. You could extend this wardrobe towards the “narrow room.” So you’d create another passage there. This way, you have the option to go from this room to the bathroom without going back through the bedroom, so you wouldn’t disturb the one still sleeping. The rest of the room can then actually be called nice-to-have and used as a hat, bag, shoe, or tie room or as a makeup or sports equipment space.

My enthusiasm for two threads on a project is generally limited. However, I find commendable the decision to forgo the restructuring of the staircase. I would therefore prefer the "stair-preserving" design, but without the balcony.

I like the first draft with the straight staircase going up better. Both upstairs and downstairs. If there is too much space on the 1st floor, the balcony can be enlarged.

I prefer the first draft with the straight staircase going up.

Don’t forget: we are talking about a renovation here, and the straight staircase is present in this case. I like the other staircase position only slightly better in such a minimal way that it would in no way justify the effort.