What about a Team Builder update?

With the new champ select for ranked and draft pick I am really excited to see it, but me an my buddies don't play ranked together even though were level 30 and are ranked, we like to play team builder to secure our roles, and we like to choose who we want on our team. So I was thinking why not make the same thing your doing with the new ranked and draft champ select the same for team builder, like the actual champion select part isn't the same but your still get the flags and you invite your bros and you have the same thing before the game starts... The flag thingies but not the champ select, because it's team builder.