Teambuilder
I know its unlikely to happen but I would give anything to have teambuilder back... I'm aware it wasn't without problems but I liked it a lot more than the current draft system. I liked being able to queue up as both a role and a champion and then being able to pick and choose which teams I stuck with based on my pick. It was more organic and a lot less toxic than blind.
I didn't even MIND the long wait times and sometimes you could get some really funny scenarios! I once ended up in a lobby where everyone was queued for Mid. I thought it was hilarious and stuck it out and we all, literally went mid. We were super underleveled but we won the game anyway. And honestly, in that kind of situation, we clearly weren't in the game to win but to have fun.
Could teambuilder be reconsidered as like another option under SR games? I don't think it would be hard to add and its not like it would matter if tons of people played it or not. I can't imagine that after Draft pick is unlocked, a ton of people play blind pick and its still there.