I haven’t made a map since sometime before Ep. 2 was released (and it probably shows) but I did this recently for a class project and figured I’d share it. I doubt I’ll ever revisit it unless there’s a major issue that makes it just not work. It may or may not be appreciated, but it is a different style of theater and a little more detailed than the other theater maps I could find on garrysmod.org.
theater_lit is a version with various stage lights turned on. They illuminate most of the theater.
theater_empty has all the stage lights turned off, with only the perimeter lights remaining. This is so you can set up your own lighting with gmod and get a higher contrast focusing light on the stage.
Let me know if this looks like it may be useful.
Download here http://www.garrysmod.org/img/?t=dll&id=126966