How it works doesn't matter. The fact if the matter is VCE is broken, highly abuseable, and overall an unstable mod.
It should not be default until anyone can use it without flaw. That means no dammed manual.
To be honest, I don't think it should be default either. It allows players to do just a bit more than they probably should be able to by default. I just don't like hearing how VCE is so horrible and broken and all this other stuff. I haven't had any problems with it, and besides, let's think about this-
If it ever were made default,
obviously its bugs would be fixed before being added into the game. Badspot isn't going to intentionally place buggy events into his game