OG over EG - too dark?

The west sun is blocked from your atrium by the storage room.

That is indeed correct. I need to reconsider that. However, I might have to qualify that we don't necessarily need direct sunlight in this area. It's more about having enough brightness.

The most stylish kitchen is useless if it is not designed for meal preparation for a family.

Yes, this planning is still ahead of us...;)

One thing I would still like to know briefly (but that doesn’t mean I won’t ask for your opinion more often ;) :

The following approach in the plan is very unusual for us, namely that the bathroom acts as a kind of "distributor." With the current approach, you basically can only reach the bedroom and the dressing room through the bathroom.

Does anyone else have it like this and has this decision proven to be the right one?

Would be a no-go for me. For example, if you are sitting comfortably on the toilet in the evening (just before you go out together) and the partner keeps coming in/through to change clothes. There are certainly enough similar situations. If anything, then dressing room or closet as a distributor.

Yes, I agree. With us, the dressing room is also the distribution room. It does bother me that we have a glass door to the bathroom from there; I just usually (!) prefer to be alone in the bathroom. So maybe reconsider this here as well ;-)

The thing with the toilet would be a good example ;) , but it is a separate room in the bathroom. Here is the entire upper floor:

Interesting - how exactly is the drainage supposed to work there?

Having a separate room feels somewhat strange to me... But everyone has to decide for themselves.