Looking at my logs, Heal was doing:
11/13: 750-1000, crit to ~1400
11/15: 900-1100, crit to ~1600
11/16: 1700-2000, crit to ~3100 (very wide spread in crits)
Renew ticks got a similar bump.
The first two seem like a pretty normal bump for going up a couple levels, that last one, though - almost double? That don't seem right.
I wish I could post the graph of this - the spread last night on Heal is strikingly different from the prior two days (min 1000 to a max of 3700) I suppose the low end may be from specific debufs - are there any in Hellfire Ramparts?
Obviously, I've upgraded some equipment and have more int now, but nothing to make this kind of a difference.
What's going on?