No, actually I haven't seen too many people cry "That area isn't done yet, do it faster"

It's when you give people image teasers that they are more likely to go "Is it there yet? Is it there yet? Is it? Huh? Huh? Huh?"
We'll I ment more from a point of view of submitting art, would something you spotted on the forums and think, 'that'd be nice in planeshift, but oh no, no point even asking them becuase its against the rules" and equaly if someone was trying to make somthing for planeshift but wanted to put it in their art thread so they could get direct feedback.
I think it
really depends. When it comes to character or NPC models, making them public is pretty much out. If you want feedback, contact some art devs and they will help you - and be more capable of telling you exactly what improvements you may need than those who don't model for the game, and may not know what geometry changes may be essential. If it's concept art, feel free to show anyone you want. If it's really good, I'll even try to kidnap it for the website

Small item models are probably okay to post, I think texture changes as well, and environments (which you shouldn't be attempting unless you
know what you're doing) fall into the character models category.
The "depends" comes into play here: if you make an absolutely stunning male Lemur model, for example, it would be stupid of us not to accept it just because you've decided to post it on the forums. But it has to be stunning, giving us no room to go "Here is a list of all the changes you have to make." If you're that confidant about your modeling, you shouldn't need to post it for feedback anyway, and instead contact the art team straight away. And I think this can apply to all art - to include it in a release when it's already been shown around, we would have to feel like we'd be missing out on something we cannot afford to. This is a very rare event and I can only remember it happening once.