Much as I'd expect, this wasn't perfect (even to my vision) in the first draft. Further tweaks and changes have been made to get closer to that, and some are most likely still to come. The ones I can remember off the top of my head:

1) The way sanctuary / black shroud interact with healing has been tweaked. Short version is, characters with sanctuary on their spell list don't reduce healing of them because of sanctuary, and don't reduce healing they do to others because of sanctuary on the others. However, a druid healing a warrior with sanctuary on them is going to lose some oomph.

2) Take everything in (1) and apply the same concept to bards and anthem of resistance.

3) Invoker shields have slightly less effect on healing. (They were reducing it a little more than they should.)

4) All shifter forms with regenerating capabilities have been re-evaluated and tweaked to some degree. Some specific comments: depending on your playing style, anaconda and diamondback especially may be quite a bit stronger now than they were before this set of changes started. Alligator got a lot better period.

5) Vampiric touch and soul drain healing has been adjusted.

6) A couple universal haste sources that we missed have been rectified.

I'm sure I'm forgetting something I changed and there's still more to come as time and sanity allow. We're also still talking about our preferred solution to super-tough areas.