Player/Group windows
 

I wish the player and group windows were more efficient. I would love to see a player window and group window combined with percentages on... hp, mana, xp bar, and aa xp bar; as well as the 'power regen' icon and cast bar, while not be so big that you have to be blind to appreciate it or able to learn brail while using it. Small, neat, and clean is the way to go, nothing fancy just an all in one thing. (and not transparent)