Every time we got a hold on the map our team would either over extend, or think "this rounds is won, time to get my sniping challenge done". Honestly some of the worst teams I've played with. Personally I prefer the clan servers with admins, but I get moaned at for choosing them.
Teams very rarely defend flags properly - it is 'win a flag then leg it to the next flag leaving previously held flags wide open so that we have to turn round then leg it back to now no longer held flag, win it, then leg it to previously held flag......'.on so on for the whole game.