I remember the survey, it's worth looking at the updated results as well for it since it's pretty neck-and-neck on new attacks vs new buffs. More people overall want new attacks, but when asked on what they were most interested in seeing, it was a new buff. Of all the healers though, I'd be fine with AST having the least DPS buttons and putting more emphasis on handing out buffs.

I'd still at the very least want them to have 1 or 2 extra DPS spells.