I think I'm going to build the Quake2 build and see if the level-preservation code that I think I see really does what I hope it does.
I'd love the idea of being able to return to the previous map as it was when I left it.
Would give the idea of non-linear level progress in Quake a boost.
/If that is what the code does, haven't had time to check it out or really look it over. Most of the rest of the QUAKE2 build stuff doesn't interest me that much (darkfields) and much of the "good stuff" is already standard fare (skybox, fog, origin brushes are supported in a few engines).