I have a suggestion for prots:
1) Main rotation window should glow only when it's entirely free Revenge (after parry) not if you have caster IP before.
2) Vengeance tracker icon should glow with IP if you have Vengeance discount and >39 rage, and if you have >60 rage even without Vengeance.
3) Interrupt highlight somewhere. At left or bottom row in the middle I guess.