senior editors and baseline quality
I would not define "wrote". Firstly a strict definition is likely impossible, as probably no FA is 100% the work of a single editor, but most FA's are mainly the result of a single editor's effort.
Secondly, it is mostly irrelevant as in my view writing a FA is by itself not sufficient to qualify for senior editor. It is sort of a minimum to be up for consideration: I would like to see extra requirements added. - Brya 04:59, 1 February 2010 (UTC)