Why not. It's a new game and there's a lot left to be discovered. I'm gonna be working on the 100% route, so I could share some info about that

I also found that some buildings have a hitbox on some of their walls, which can allow the player to stand on it, halfway to the top

I'm pretty sure it's indeed a camera glitch. Climbing on top of buildings is exactly the same as no-glitch. You simply float on top of the building if you succeed, and if you don't, you fall down. But you fall down inside the building, which might suggest that the camera moved up, as well as sideways.

It's really weird. A simple rotation camera apparently changes your position. I think this might be one of those glitches that separates the player/character and the camera. I know Portal had something similar.

So I was doing some glitch hunting, and I managed to clip inside the first pillar by spamming crouch next to the trampoline thing. After exiting the building I was in some kind of floating state. I could move normally, but activating cristals was weird, and requires precise but unknown positioning. Same thing with the trampolines. It's as if everything was moved a couple meters.

I could easily enter buildings this way, and it seems like it's also possible to stand on top of white buildings. Apparently the buildings are empty inside, so it's not possible to climb them from inside unfortunately.

I'll look for other possible uses and other glitches.

Nope. Not at all. The position of the crystals and the buildings is always the same, which allowed us to find routes and stuff. Some crystals activate certain buildings. You can look at some runs on the leaderboard to kind of understand the route, but it can still be optimized