How does the Community define a "quality admin"?
Why do you need such a definition?
I would think for the same reason that, before you decide something is substandard, you would first need to define what the standard is.
Hm, this sounds like you didn't read the rest of my posting, but maybe I didn't make it clear enough, so I'll try again.
I believe that current Wikipedia practices implement the following mindset:
You don't need to define what constitutes a "good quality" editor because the "medium quality" editors can edit just as much as the "good quality" editors. You only need to define "bad quality" editors because those are the ones you need to find in order to block them from editing. "Bad quality" can be determined on the basis of specific incidents (e.g. continued vandalism).
Similarly, I am advocating that the same should apply to admins:
You don't need to define "good quality" in this case because the "medium quality" admins can stay just as much as the "good quality" admins. You only need to define "bad quality" admins because those are the ones you need to find in order to demote them. "Bad quality" can be determined on the basis of specific incidents (e.g. continued disruptance).
Why do we allow everyone to edit even though people vandalise pages all the time? Of course, it's because the constructive edits from passers-by outweigh the work required to clean up after vandals. The RfA system is analogous to having all users blocked by default and requiring them to apply for editing privileges first. Then you'd get people voting "oppose" because the user makes spelling mistakes in their blog or something, thereby missing out on potentially useful contributions like uploading selfmade pictures or organising categories.
Wikipedia claims to have a system in place that finds "good quality" (or at least "good enough quality") admins -- it's called RfA. What I'm saying now is that this search for "good enough quality" admins is misguided because the ones you need to identify are the "bad quality" ones. Although the current system makes it difficult for a genuinely bad-quality user to become admin, it also misses out on "good enough quality" admins because of specious criteria like "not enough edits". This way (potentially) hundreds of users are prevented from helping constructively.
Timwi