I've mulled this over for awhile, and I think what might be the smallest, yet most useful change, would be to change the proc for Benefic II from instacast, to a Freecure, like it's WHM counterpart. Due to the AST's slightly lower potency, I find myself casting Benefic II frequently, and it's a shame all of those procs are wasted on what is arguably useless. Making it Freecure, will significantly help curb mana issues.