I agree with the idiot infestation problem! rush and conquest really sucks when you get a team where, like 70-80% of the people is sitting back in base, whining about no one capturing the flag/destroying the targets...
I actually had a nice chopper team set up at one moment and we literally had almost cleared the target area, and then there was still like only 1 person trying to capture while the rest where sitting on the middle island(isle innocentes) and didnt even hit any targets since the enemy team where smart enough to avoid the open spaces.
I think the only solution is to create a little "community" with serious players and then trying to get ahold of a server with password.
What i like to do is creating a squad with my friends only, then go out and kick some serious ass.