This topic comes up from time to time. Personally, I'm not itching to say "that which is true" in the Renderosity galleries. A few times I've made suggestions that could be construed as constructive criticism and haven't suffered for it.

There are some amazing artists here, but this sort of thing is rare. You'll find a lot more insanely great artists at Deviant Art, but even there they are buried under a mountain of mediocrity.

Download my free stuff here: http://www.renderosity.com/homepage.php?page=2&userid=323368