I'm not sure if there are copyright issues involved, and surely there are, but what about 'fairytale' characters? That rabbit idea immediately got me thinking of an Alice in Wonderland style rabbit with a pocketwatch... For the most part its good to let people create more specific characters themselves, or in postwork, but I wouldn't mind seeing some familiar characters at Platinum Club prices. :)

A dwarf with seven different morphs (it would be silly to make them individually)? A big bad wolf? A frog prince? A detailed 'wicked witch' would be pretty versatile, though I have seem some products along that line... and for general animals, I'd like to see a good wolf/fox and some birds such as a macaw, cockatoo, raven... Okay I'll stop there. So many ideas, so little time...