TheDuke, yeah, Meorawr is one of the authors of Power Auras Classic - and he keeps asking, because he wants to know what people USE in WeakAuras that PowerAuras doesn't do yet, so he can see about adding similar features to PAC.
It's less useful to play with the addon when you're looking for things like that - sure, you can see everything the addon CAN do... but why have a feature if only 1% of people might ever use it (programming term for this is called "creeping featurism")? He wants to know what features made WA so much better than PA that people felt they had to stop using PA and start using WA. :>