Blizzard wrote:
The way we see it, Intellect increases the power of your heals. Spirit (and other regeneration mechanics) replenishes your mana. Having Intellect also increase the size of your mana pool complicates things. It's harder to balance, and feels worse for players trying to balance their character.
It is a good thing you scrapped SP in the last expansion then, isn't it? It isn't as if they could just change a co-efficient.
Blizz wrote:
Please remember, the goal isn’t to make healers so resource-starved that they can’t heal. That isn’t fun. The goal is to reward healers who limit how much overhealing they do (in other words, play smarter) for their efforts. You limit your overhealing by doing things like casting a smaller heal when a smaller heal is sufficient, or casting a slower heal when death isn’t imminent, or casting a single-target heal when the group isn’t all taking damage at once. Skillful healers should prosper. When players feel like increasing their skill doesn’t increase their success, they tend to get bored or frustrated
The thing is that fresh at lvl 85 or 391 gear they haven't made healing require "skill". Spam your aoe heals and clump up, use your mana returns when possible and win. If anything homogenization has made things even more generic and skilless, they added the number of heals I have but have pigeonholed me into a situation where the majority of them aren't worth casting.