Yes. There are plenty of words in the English language with which to say that something is of subpar quality. Pick one, or something.
The ratings should ideally be able to represent a substandard article, a decent article, and a very good article, at the least. We have three categories, so that's fine.
I say that we should either use suitable words, or use ranks that don't really imply much of anything (like your examples).
I guess you could do both and go with something like "bronze - silver - gold", which was already suggested, since none of them really have much of an absolute meaning, the metal theme works for DF, and it's clear which is better than the other. It makes sense to people whether or not they're new to DF. Simple wiki functionality should not rely on injokes.
Why fuck with something that already works?
Incomplete/Stub/Problematic Artcle
(regular) Article
Good Article
Featured Article
Done. Problem solved. That wasn't hard.
This works, although I don't know if briess (or anybody else) really would want to select "featured articles" in any sort of official manner. I think the best way to go would be to use the sort of vague quality ranks we were just talking about before, or stick to more specific templates on the pages themselves (to state what the page actually needs in particular), or some combination.
But yeah, this really should not be a big deal. It's like we're getting progressively closer and closer to something that makes sense to people who haven't been completely lobotomized by community injokes.