theres a lot of poorly built maps bundled in with openarena, which in my opionion its the only thing that it really has going against it, that and the lack of maps to choose from. Although I dont blame the coders as they wanted to get the code cleaned up and stable for play, levels can come later
I'm working on my own CTF base styled monster. I'm expecting a lot of players to be able to play in it comfortably at least 5 vs 5, once I get it to a point where I feel its presentable I'll be posting screenshots. Ratix knows I've been working on it for a while now, but with college and what not I only got a couple hours to spend on it, and I"m finding a lot of little voids, optimizing it to use as little brushses as I can etc. etc.