Yeah, I agree, trying to define who's a newbie is actually not a good idea, we don't want to scare anyone away, nor offend any of the new guys. Not every new guy is a newbie, not every guy that's around since 2000 is an expert modeler either.
However a separate forum for all these modeling showcases would be somewhat nice, or maybe we all should add a [MODEL] tag or something. And a [GAME] tag for a game that's showcasing some work in progress. It's a choice between yet another sub forum, or add tags I think, maybe tags are the way to go...
Cheers