I'm a bit limited in terms of what I can add at the moment, personally I'm not a fan of
- the split between "support" and "DPS" healers
- insisting on 24 buttons for all of them - why?
- a number of the skills (names, animations)- again, that's a personal choice, an equal number of people could really like them
- a number of skills that have been removed
- too many proc skills in some cases

If I could pick one I would really want more improvement - it would be AST. Yes I see some positive changes but the change to CU makes no sense to me, and most changes are to buffs, which really doesn't improve much for that job. I would not want a skill that teleports people to me when (a) I already have rescue and (b) there are already enough complaints with rescue and (c) another skill where, as in your CU the AST needs to stationary? no thanks . Winding fate is - another way to buff. So overall for AST, I don't see that (for me) I don't see that the goal of doing more and being more interesting would be achieved.