I just want to see the lvl 100 skill return to form. Make it Dark Arts, purely for the animation. DA will just work in the same way as Infuriate but with some difference:

Dark Arts:
-60 sec recast (2 charges)
-Gains 3 stacks of DA, 15 sec duration
-DA augments abilities and weapon skills.

examples of DA augments:
-TBN costs no MP (still retains free BS when popped)
-Dark Mind increased to 30% mag
-Soul Eater changed to Power Slash (increased potency, etc)
-Siphon Strike changed to Spinning Slash (increased MP)
-Stalwart Soul restores HP

This is just an example of how DA could have worked in current game design instead of being gutted and turned into flavor text on a tool tip. It copies WAR but still is uniquely different.

However as a whole I would like to see them start to make all aoe ogcds work in the same way as Expacion on PLD does, where the first target hit is full dmg and every other mob gets less potency. ex. Upheaval upgraded to Onslaught, Edge and Flood combined, etc. It would free up button space.