Preferred champions before bans. PAY ATTENTION TO THEM.
The amount of times my preferred champion gets banned by a teammate is too damn high. Like seriously people? Is it REALLY THAT HARD to LOOK at the preferred champions of your teammates before banning? I wish there was a way to prevent this from happening, maybe an "Are you sure?" Dialogue box if you attempt to ban a champion that one of your teammates has preferred to play? I don't know. But it's infuriating.