So im pretty new in this game (around 130hrs atm) but there is already few thing i would like to suggest.

Nameplates:
1) Missing option: Disable in combat - Since i play healer i dont care whos name is there just wanna look at health bars (not just watch 24/7 party frame) and it will clear the your screen of unnecessary things.
This could be as 2nd setting. 1st will be out of combat where u can set what u wanna see out of combat and 2nd in combat where u set what u wanna see again. F.E. Out of combat i wanna see nameplates but not in combat.
2) Bug - Minions nameplates cannot be disabled, only option to do this is when u select default scheme "hide" and manually turn on everything other than minions
3*) Nameplate debuff indicator. I would suggest something like 2nd outline that indicate debuff on target.