I know it's not as great a substitute in terms of archiving, but Tumblr seems to not ban NSFW stuff (if all the porn blogs are any indication) and it's kind of more made for pictures than text?

But that is a fairly shitty situation. :/

And while AO3 does have plans to host art, I'm not sure that's a good thing right now... they haven't exactly fixed the code on the fanfic archive yet. -_-