I don't know about the rest of you, but when I bought FPSC I didn't have any plans to sell anything I made with it, and I never expected it's graphics to be the greatest. To tell you the truth, I was just hoping for something a little better than Doom2 or Quake, as far as graphics and everything FPSC has that.
I've been playing games forever it seems, and really got away from FPS after it started to get to the point where you needed two hands to play them, I enjoied (and still love) just running around through a level blasting friends, and still use Elite Forces and the origianl Jedi Knight for this purpose, I don't play FPS for their graphics quality myself, I play it because going up against friends is more enjoyable than against a computers AI.
So what FPSC has as of right now is a good start, just a few changes (which i don't think would be difficult) and it should be fine. I'm not talking a physics addition, but teams, and multiple maps are a good idea.
Stupid people are like Slinkies, it's fun to watch them fall down stairs. And some times you need to give them a push.