Level creation from files is easy!
One nice thing about using mostly c# for development is that reading in input files is reeeeeaaally simple. It's just your basic file reader and parser.
Right now my main scene gives my Level_Importer a file name, and Level_Importer returns an ArrayList of the objects in the scene (only walls for right now, I don't think that the levels store enemy information).
So now my characters can run around real levels... if I could only get my main character to move. I'm using my old Lizardman guy right now to move until I can get some help with Maya.