Hi 11ant,
hopefully your notification display doesn't burst from all the likes I'm giving in another thread.
You are of course right. The kids' rooms are a bit cramped, but I'm cool with that. They face south, which is very important to me. The kids will spend a lot of time there. The square meter number fits for me, I don't know it any other way.
So I would see this as a compromise and accept that it is like this. There is no perfect floor plan, but a decent one with which you can already imagine living. This is almost given here, if you tinker a bit with the windows.
Edit: the funny thing is: after we shelved our first (oversized and rightly completely torn apart) draft, we started differently: which rooms do we want in which size? Where are we often, where less so? From that came a squaring. The client didn’t like that so much, she wanted a Lego brick after all. But since everything is included, we are still at 10.5x10.5.