Maybe it's an idea to make the teambuilder a bit more organized. Having tiers be a certain color. NU - Red, UU - Blue, OU - Green, RU - Yellow as example. It'd make it easier to understand considering many people have over 50 teams, and it's hard to find a certain team with that many teams saved. Maybe a color coding or adding 'folders' to the team builder would be an easy solution.
I made an example for what could be a nice feature for the teambuilder. It it's appealing to look and a lot easier to understand. Just a suggestion