Riot, please listen
I've just read that you want to replace the current teambuilder with the new one. It would make sense, but I beg you to reconsider your idea. We players use teambuilder when we want to play a specific champion in a specific role, without caring too much about our team composition or the possibility to be counterpicked by the enemy team. It works just like blind pick, but without the need to fight over your favorite role with your own teammates. The new teambuilder, instead, is more strategic and works just like draft pick. So, why don't you just remove blind pick and draft pick and replace them with "teambuilder blind" (the current one on live servers) and "teambuilder draft" (the new one coming soon)?