It would be better if you had read the rest.
I have read:
We will have to look at the stairs again. However, we don't really need more living space now, and somehow I don't find spiral staircases particularly good. Visually, I also find the landing stairs better. And if someone falls, I think two landings don't hurt either.
Sounds to me like: We definitely keep the landing stairs, but someone will work some magic with the ceiling heights or it will just stay as is.
The 1st floor could be left at 2.52m and the 2.30 under the gallery will not be built like that. That would be too low for me up there. If I still take out the 16cm from the floor slab the heights should fit. We didn't want to adjust that yet in the building application. Because we already had difficulties getting approval for 35cm higher than the neighboring house.
You have already submitted the building application and now start optimizing the heights. As far as I know, the heights are part of the application. If you change them all now, in my opinion you would have to submit a new application. Therefore, you have to admit that we are a bit skeptical here. Aside from that, it is not even certain that you can actually gain enough height for the doors.
And your exaggerated statement ...
I always exaggerate when the message has a hard time getting across.
actually only leads to me now having a picture of you in my mind. However, not very flattering when I imagine you having to crawl through a 2m door and already talking about mountains when you see a 19.5 cm high step in front of you ;).
It doesn't help you at all to build personal "defamation images" of me. You will still sleep poorly as long as the problems are not off the table. I, on the other hand, sleep like a baby; it’s not my house, and such insults are not even worth the letters I am currently typing. Just to make it clear again: we are on your side here. We ruthlessly point out the weak spots to you. If you want to run up and down 19.5 rise with 25 tread several times a day – you (probably) won’t die from it. This stair still meets DIN standards but is already slowly dangerous going down in particular.
I actually find the 25 cm tread depth worse than the 19.5 cm rise.
I think the combo makes it. ;) Here again the recommendation to measure a stair available to you (house, work, friends) and test walk it + compare.