I'm curious about using files that come from Lucas...
What items can I use from the assets0 file?
Is anything game?
Is nothing game?
Where do you get stuff like statues and desks and chairs and the like?
Is it copywrite controlled?
Do all of the mappers out there make all of their own models too?
As long as your level is free I believe you can use any models.
You can extract the current models in the game with Winzip, Pakscape, or someother useful utility.
And yes you can make your own models to use.