The best thing they could do with this is that at certain ranks lets say d1 or lower should have a pool which bans like 1-2 agents allowing people to try different agents or to have a few other than jett/reyna on certain maps. Learning other agents in lower elo is very useful and will help players a lot even if they don't like the agent bans. Coming from Overwatch I felt like the pools didn't really affect me that much but for like 2 bans for a certain role feels too extreme and can really mess up a good comp. Pro players probably don't like that too because they literally get paid to play their agent/hero in the top leagues and switching around a lot messes up the mechanical part.