I'm not hating because I know people love it, but I have never really liked Operation Locker or Operation Metro. Its good for revive whoring but other than that I hate it.
I consider myself fairly crafty in the game, so if I do end up in a match on one of those maps, my only goal is to cross enemy lines and take the objectives closest to their base. Sometimes I get lucky and my squad will catch on and help me, but usually they just like to stand in the middle of the map with everyone else and fire RPG's and Grenade launchers.