Sorry, but for my part, it's still a solid "NO".

Sites like DAZ and Renderosity are big, well established, and at least show a preview of what they offer, alowing me to see whether I will benefit by joining BEFORE I register (and give my information to the site, even if the information is minimal).

Also, please note, that the sites you mention are primarely stores, and commercial establishments, and the communities they host are secondary to their main goal.

If I do share my knowledge (without being paid to do so), I'd want to share it with as many people as possible, not keep it under lock and key for some community members only. Isn't it the whole point of sharing knowledge about Carrara, so that more people would be inclined to use the program? - Not just the dedicated users who would register at a Carrara off-mainstream community.

For a new community which, apparently, tries to welcome all, the lock and key looks strange, if not suspicious. To me.

As I said, I am not trying to make you change your mind. Just giving you an outside perspective on how this looks (or can look) PR-wise. :) And a potential reason for why you might see fewer visitors than expected.

But I do wish you the best of luck in this undertaking.