1. People constantly leave Aram champion selection when they get a champion that they don't want to play. The mode makes no sense anymore. They know they will get a random champion, yet they leave. Why not? The penalty is ridiculous. What are the chances to get a champion that they don't want twice? My suggestion is this: Once a player gets a random champion, he will keep getting it until he finally plays with it. He can leave as much as he wants, but this champion will be waiting for him anyway.
2. If the champions are given randomly, the roles shouldn't be. Each team should get a random tank, a random mage, a random adc, a random fighter/assassin and a random support. Come on, a little bit of balance guys.