nothing outside of personal preference imo. Except its rotation is bring to me and its defensive utility needs to be more party-centric. When I first saw Shelltron in the HW benchmark trailer I was excited as it looked like he blocked a magic move but man was I wrong. They need to fix Clemency's mp cost and give a shorter cooldown on some skills like Tempered Will and Divine Veil which I feel are too long for the effect they provide. They also need to change Cover to block all damage or change the name to Deflect which is really what it does. Deflect physical damage but still lets magic go through.

Also they really need to change the effect of Hallowed Ground to start at the beginning of the animation instead of at the end. Nothing pisses me off more than using HG and dying because I was in the middle of the animation.