If you have not already been following the development of Recount then it might be worth taking a look. The EJ thread is here (http://elitistjerks.com/showthread.php?t=13567). We're monitoring and might start using. Looks seriously useful in places.
TL.
too bad it doesnt include overhealing
looks like a nice mod
It has a lot more in there than you think. OH stats are in there (sort of) and it is being improved almost daily to include much more detailed stats. You can also parse the log from the fight to a channel for further analysis. We just used it for the first time tonight on the Karathress fight and the timeline graph of damage taken v incoming healing was stunningly helpful.
TL.