I made a quick crack at an ACT plugin today to figure out Repent's healing efficiency. I was going to go crazy if I saw another person try to claim that Repent was a 9k heal.
So here are some stats going through the set of T1 raids:
Code:
Total count: 421
Total warding: 670234
Total healing: 104803
Average ward: 1592
Average heal: 248
Healing Perc: 0.13%
Efficiency: 0.58%
And some stats for going through all of the heroic instances I could think of:
Code:
Total count: 192
Total warding: 258071
Total healing: 74611
Average ward: 1344
Average heal: 388
Healing Perc: 0.22%
Efficiency: 0.64%
The efficiency baseline is 50%, since wards are "perfect" heals. Grouping yielded 64% efficiency, where raiding only had 58%. In other words, the healing portion of Repent is barely used.
The reason it is lower on raids is that it is obviously harder to time Repent to get on while the tank isn't at 100%. And if the tank isn't at 100%, if another ward is ahead of Repent, it won't do its healing... giving the tank a chance to get direct healed to 100% before Repent's turn.