As you say, ultimately SE will either modify healer design, or it won't. I imagine it can take many things into consider, such as people who cancel and provide their feedback, or people who like the changes in PVP, or who knows, maybe they'll hire a healer designer.
One thing I certainly do hope is that people who main healers are given a say into future changes and that those people consider that, as well as those people who actually have access into the actual effort cost analysis - since none of us aside from SE really know that.
