ya know
I also asked that .
& heres the answer.
nope , the level/scene system is unmodifyable.
you can add models to the game folders.
example, I added some converted evangelion models to the enemy folder.
I wouldn't suggest it , having a glitch.
as for levels all I've been doing is modifing textures & adding objects. you halfta adjust the settings for your objects.
of course who knows some wiz kid will figure out how to import levels one of theese days.
I mean shoot , isin't that what expermenting is all about.
well anyhoo., hope this helps.
if not , excuse my insanity.