I like that it lights up the next recommended button, but it LAGs behind by 1 global making the recommendation kind of bad. It should highlight the next in line while casting another spell and or a separate color glow for the next spell recommendation so you can queue albites.
Ex: Green for recommended press now and yellow for possible next spell/ability recommendation.
Edit:
Also How do you plan on dealing with empower abilities for evokers? Cast level recommendations?
Any support planned for tanking/Healing besides DPS rotations?
Any support planned for first recommendations prior to a pull? I.E mouseover for healing or target for tanking/DPS?