You get 4 corners on your league of legends avatar, they should let you show all of them.
Also, just won an ARAM with two leavers on our team. We got all the way down to one nexus turret and then both of them rejoined within 2 minutes of each other. Even though they were 5 levels down we turned the game around because me and my friend carried hard.
He was Morgana and I was Amumu.