Champion Roulette
I would love a new GameMode that had a visual spinner or just automatic cool text with your role, and whatever Champion Role that showed up your team can only play. So if the text shows support you can only play support and the same for your team. Or you could just make it for individual people so it's a random role for each person. This will be like ARAM and URF how it's a random champion but for roles. And after you land on that class you can chose any champion in that category that you own.
"Would like to see more added" That pole option is would like to see more added to this idea, if you think it is a decent idea but still think it could be improved.