Alternatively, we could mooch off the good will of other people, and just make a list of Official Freeloading MIGC player's Servers for a variety of games, a la nss.nu for random practice type stuff.
Then come tournament time, run a server of our own for whatever game it is we're playing.
Of course it suits to have "hotspots" as you call it fairly regularly; in which case I guess there could be different times/days set aside for different games (eg, every other saturday at 9, run a UT server) which would be a sort of permanent planned event that wouldn't have to be announced (because everybody should know that it happens anyway).
Big crazy tournaments in which I am always champion, especially over Huz, could then take over the slot of that game's hotspot; just with more administration.
And out of the mist came.. oh wait... it's just more mist...