I thought if we had a "primary" badge or KPI system it was the content focussed ones and especially those related to Featured articles.
Editcountitis is seen by many as a bit of a joke. But there many others including articles created and length of service.
I do like the idea of celebrating our most thanked editors but I don't think the necessary information is currently public.
[...] Unfortunately our main interaction mechanism is writing on talk pages and it's hard to tell whether any contribution on a talk page is a "positive" behaviour or a negative one (short of some kind of sentiment analysis). This is an unfortunate consequence of using a wiki for a conversation rather than some more purpose-built tool.