I'd be happy if healing was more 50/50 dps and actual healing, with more support style skills in there too.
Sage is almost there as far as I'm concerned, it has a couple more dps skills than the others, but really... that's just back where healers were 2 expansions ago.
Reimplementing AoE DoTs and one additional proc or combo based dps skill would probably be enough to make all the healers more interesting.