ARAM champion select needs work.
I love ARAM, and the random champion select is fun. It lets you try champions that you sometimes wouldn't consider using or trying off meta builds. What I don't like is the reroll system. I usually save two rerolls incase you get a champion you don't like, and no matter what I always reroll once to increase the choices of champions for my other teammates.
The problem is when you got a champion you already love, and since I always reroll once to help my teammates regardless of the champion I got, there is nothing keeping them from stealing that champion.
I just want a 2-3 second delay before someone is allowed to take the champion you just rerolled. I think this will encourage people to reroll more often, and increase the chance everyone gets a champion they like.