Teambuilder back for norms pls?:(

I don't play a huge amount of ranked and no, while I'm not a huge fan of duo-queue, I didn't just make this to cry about solo-queue being removed. I'm here today because back in January of this year a matchmaking mode very dear to me; teambuilder, was removed. I just never saw the reason for this to happen. Is there a maximum amount of matchmaking types that Riot can have in their game? I understand it may impact queue times to have more of them.. But with teambuilder, if I felt like playing my Zed mid, I could queue up for that and be guaranteed that champion/role. If I wanted to create my own comp, I could start a queue and accept/decline champs that I think would/wouldn't fit into the desired comp. With this new champ select, I can't do that. I am given a 50/50 shot (depending on champion of course) at getting the champion or role I want. I just never saw the reason for the removal of teambuilder as it was a perfect way to learn new champions or test out new ideas. I'd really like to see it re-implemented.