Seeing as casting has gone to the wayside since meleeing and WSing is better dps, I propose a new ability that will at least give some incentive to casting as well:
Morphic Surge(1 min recast): The next physical spell you cast will grant TP based on the MP spent and number of successful hits.
Not sure if 1 min is too much or too little, but it seems like a way to reintroduce at least occasional casting back to the class.