I think everyone having avatars would be a good sign- all us lazy bastards getting off our arses and earning our keep here.
Wait a minute.
Screw that. Anyway, I vote yes, because they're contributing a hell of a lot more than, say, the Node War people, and we actually can see the fruits of their labors before nobody can run FreeSpace because Windows becomes an obsolete OS.
That said, I'm biased because I've had a good long time to prep my stuff for when I can upload again, and it's ALL renders or movies, and I plan fully for it to get a gallery or something. I'd work on TAC, but frankly I think it died again with my computer.

On a side note, I think gallery ownership has become a bit... lax in the requirements. If someone can produce 3 renders that beat Steak's, they deserve their own gallery and avatar, and all the attendant glory. If someone produces 30 that look like ****, or they're just another person doing pencil-drawn work and scanning it without even bothering to clean it up in Photoshop (which is all right in some cases but is getting
very tiresome, since it seems to account for about half now), they should be put on hold 'till they do something good. Basically, if it falls below the p1mp art line, it shouldn't go, regardless of whether the creator labels it "art" or not.