Truly fantastic R0J0hound! Something like this I've been looking for for ages. I love 2D games, but sometimes you just want to have some 3D elements inline, where you're not limited to rotations only clockwise or anticlockwise. I've been playing with Q3D as well, but as you say it's quite bulky when you just want to add some simple 3D elements in a 2D world.
If you have any plan to turn this into a C2 userbase friendly plugin/behaviour I'd be happy to assist creating some assets, Icons, tutorials and whatnot. Good job R0j0.