i like playing the class.
it's mana drain skill is good. gives me a bit extra shine for some extra shopmenu weaps.
banish is also extremely powerful.
it doesn't double or triple the size of the team. each one regens ONE player. (unless there is some mistake in the race.) they respawn the FIRST person to die. now, if the BM respawns, then it gets reset and they can respawn someone else. BUT, that is on the inividual in question to do so.
basically you're complaining that sometimes you come up against some people who like helping their team, so they support w/ bloodmage. HOWEVER, you never find someone like that on your team.