BG team imbalances

[Incarn]

change the picking algorithm from "random" to "whoever signed up first" and stop letting people sign up when the maximum limit is reached. or, if changing the algorithm to that is hard/not possible, then not allowing people to sign up when the max limit is reached would be nice by itself. that way people can know if they should sit around for 4 minutes or go do something else.

the lulzy teams that emerge from random picking is, well, lulzy, and it's even more amazing when they *work*, so i don't care about the rest of the topic. do whatever. :>