You know, for a game that revolves around teamwork.....

There really isn't any unless you're watching the LCS. Most players are expected to carry to get to a higher division or stay with those with poor execution and mechanics. Players are then expected to exhibit "positive behavior" when most of it isn't due to being a rude person in general but having to deal with someone that goes 1/10 before they rage quit or AFK. I saw a post that suggested ranked solo and it seems like a great idea to me :P.