Difficult question with lots of different (valid) opinions. This issue pops up regularly.
Aiko is considered an 'adult' figure here (from a merchant perspective, you can have promotional pictures showing her nude for texture products, while it's not allowed for other figures (for example the Young Teens or Preschooler figures, for obvious reasons)).

I personnally wouldn't mind seeing Aiko nude in any form (I don't associate the figure to a real person). Others would mind. Both opinions are valid, I think, and depends on the interpretation of the picture by each individuals. You can't please everyone.

If there is a picture that hurts some tastes, I believe we should trust the site's moderators to review the issue and act sensibly on a case by case basis if there are complaints. Likewise, people posting pîctures should (hopefully) act responsibly and not post something that is obviously 'disturbing' (at least not without a proper warning).

Just my 2 cents on this. I'm it's not really helpfull, though.