LetTheMiceFree,
I feel the same way.
I can get a 3D game to look pretty good as long as nothing moves.
If the player sprite is in front of another sprite it looks fine, but once the player jumps over it and is behind it, half the player is gone.
Or if objects are set to invisible, when it is visible again, it doesn't matter what layer it's on, the overlap becomes an issue. I've read the C3 3D documentation again and again - an adjustment that fixes one thing creates an issue with another.
It's my only issue with the 3D aspect of C3. I love every other thing about how C3 does 3D. Everything else makes sense and is so easy. The only issue is the transparency/overlapping.