Champion Select Tabs.
I have a new idea for champ select. Prior to the game starting, perhaps on your profile, I think you should be able to divide the champions that you own into tabs that show up in champion select just like internet browser tabs. This will help when someone is tabbed out of their game until the last 5 seconds of their pick timer, or even just wants to be able to see their whole champ pool for the lane they want to play all in one place. I would think there would be tabs for the roles you provide, Top, Jungle, Mid, Bot, Support, and we would just be given the option to click and drag champs into it so they are easier to find on the champion select screen. This could also go as far as having another tab that is dedicated to priority picks and bans, however I think the most important ones would be for your roles.