This is something I've been considering every now and then; personally, I'm not really fond of adoptables because way too often, the artist just draws a single template, slaps a few different color patterns on it and call the results different characters. I think that's just cheap and lazy, and I don't want people to think I'm one of those. I mean, sure, I'm a lazy fuck, but I'm a lazy fuck with ethics.
That being said, I've been thinking about drawing a few different characters, each with their own individual design and species, and offer them for adoption. But I'm still not fully sure about that and I hoped to have other people's opinion on it. It could really help me make up my mind on the matter.