Tremulous would need at least some restrictions in order to finish a match in somewhat normal timeframe.
I haven't played tremulous in a year so i don't really know which version people use these days, but i got a feeling there are like 100 different of them on each server.
There should be a new official patch with all svn bug fixes so far so at least people are able to get the same version of the game.
If such patch would be released i would add the game to
ClanBase in a heartbeat.
I think ESL admins feel the same.