The issue with starting a server like Wolf ET is that it's a team game, and thus requires more players to play. I doubt if Wolf ET is probably very fun to play at all unless you have at least 8 players on a server. So you have to have at least 7 bored players playing for a time before anyone who just wants to play a good game will connect. Many people look at a team game server with 3 people in it and say screw it, I'm not playing with 3 people. Look at the campus CS servers these days. Part of the reason nobody plays on the servers has to be that not enough people join at any point to rouse interest of other players. I bet plenty of people on campus are playing CS, but nobody joins the campus server because there aren't enough people on it.
With a game like Quake, you can have a good Free For All with just three players. With two players you can have a good 1v1 (if the players understand how 1v1 works and/or enjoy 1v1 at all) until just one more player joins.
Also with Quake, if there was a point where 6 or 8 or so players were in the game, someone in the game could call a vote to switch the gamemode to Team Deathmatch or Capture The Flag, and then they can vote back to FFA if players drop. TDM and CTF in Quake 3 (never played these much in Q4) provide for some pretty awesome teamplay.
So there's why I think a free for all type game is going to be more successful than a larger-scale teamplay game (don't even get me started on Battlefield X - 16 or so players needed to have a good game).
