Thanks for all the good replies everybody!
The collision on these is pretty good. For vehicles it's not quite perfect. But for armor, projectiles, and raycasting it's just fine.
I didn't even think of that, I don't really know if I could fix that
May I request half arch plates?
There's no good way to make a round hole in the floor.
I started creating something like this a while back but only created like 2 bricks, I'll have to finish it and release it too.