@Pletter I see what you mean now. The mod has been updated to also lower the requirements for the two rituals that depend on impressiveness. The maximum requirement has been changed from 360 impressiveness to 250.

太好了

Both the gallery and the ballroom demanded an impressiveness rating of 240, which is the highest tier, and it's ridiculously hard to maintain. A colonist walks through twice and suddenly the room is "filthy" and the noble is having a tantrum because the impressiveness dropped to 239.
To fix that, I just knocked 40 points off any room requirement that was over 100. So the new cap you have to worry about is 200. Much more manageable.
But be warned, the ballroom is still a beast. I didn't touch the instrument requirements, and that pipe organ needs a huge dance floor. It's still going to be a space-eating monster, no getting around it.
The gallery, on the other hand, is super chill now. Just cram enough statues in there and you can make the room pretty tiny.
At least you can fire those 5 cleaner mechs you had permanently assigned to that cursed ballroom.

The ballroom event also has ludicrous scaling for impressiveness. I would suggest scaling this down too.