It gets really bad on Hijacked with spawn trapping, especially if there's someone watching the underground and not letting the other team claim control of regular, albeit random spawn points again. I like keeping a spawn in a tactical way and letting them come to us, but I hate seeing teammates aggressively render a corner of the map where the opposing side has nowhere to go. It's cruel and see to it as completely unfair.
Do unto others as you would have them do unto you. =/ Which is a nice, clean, and fair game for skillful and entertainment purposes.