That would be a bad idea. (The remove)
Without them there is no way we can make big halls.
I agree that 2 diagonal supports facing each other should not give anything but the wall ceiling connection should be working normally.
And yes I am aware that those diagonal support beams has a bug and eventually loosing their functions on some reload. That needs a fix for a long time. Maybe this last patch made something because since that time my main hall wasn’t collapsed anymore so far. I had to rebuild it just after the patch tho.
All and all with a “stair” pattern we should build as huge as we want. so wall ceiling on top diagonal support in between em on that ceiling a wall again ceiling on top diagonal support…rinse and repeat should work (especially when you made this from 2 or more sides touching each other. therefore it creates a “triangle” which is one of the most stable forms in architecture. Just think about IRL bridges they all use triangles forms for strengthen stability)
also inverted sloping walls should work like the diagonal supports.