Requital, what is the name of your addon and where can I get it? I'd not have started,this is I had seen something else that did what I wanted. The intent is to have a config screen to add auras by name or spell id, as well as choose what stat method to use to track them at a user level. At a dev level the intent is to have the stat section be modular enough to easily roll a new way to track something if the default couple methods don't cover it. Being that this is just an initial alpha, none of that is in there, though its trivial to add auras in the lua. The readme files give more detail, but bottom line is that I planned it to handle general purpose aura and event tracking, without trying to become something too specific or at the level of recount or skada.
Gynshon, that aspect re: purifying brew details sounds great. I'd wanted to do some of that (just number of purifies and calculated amount purified - you thought about a lot more), but it didn't fit as well into the first pass as the rest, and I thought about maybe doing it as a patch to brewmaster tao instead, or just waiting till i had spent more time looking at how to add things into recount (I haven't personally used skada or looked at its code yet). I was concerned about too much special casing and wasn't sure whether it should be part of a "simple" stat tracker or something built into a monk specific addon, but at least a basic count and some stats ought to be able to be added as a stat method module easily enough.
However, I only started any of this because I couldn't find the tools I wanted. If I find some other addon or set of addons that does what I'm wanting, then I'd happily just use them, or offer my assistance in developing, testing, whatever. I've learned a lot just from what I've already done, and there's always other things to work on. While I welcome addon feedback, I just as much welcome ways in which I can do this stuff with someone else's work