The main things I'd like is the following:

1) Switch location of Combust II and Gravity, and give gravity the slow/heavy effect. That way it has utility like holy, especially at mitigating autoattack damage, and we'll have access to an actual AOE ability for lvl 50 dungeons like the other healing classes.
2) Give us some useful direct healing abilities after level 42. The only ability that directly heals after such an early level is Collective Unconcious at 58, which isn't that good to begin with. 18 levels without a direct healing ability specially 52+ is kinda odd and detrimental.