Quote Originally Posted by AvenoMatt View Post
I'd also remove their front healing and have them just apply the regen or shield. Potencies of the regen and shield would also be reduced since you want strong regens or shields then you should go with WHM and SCH respectively. AST's main focus should be it's cards and party buffing utility.
...are you trying to kill everyone?
It's not a healer if it can't heal, the 'pure support role' doesn't exist, AST is still a healer and has to compete with the other two/three.