I don't know if this has been said before, but I think an Aliens animated series would be successful nowadays if aimed at adults. I'd love to see it. It would give some variety among what else is out there. What's there to choose from in terms of adult cartoons? Superheroes, tasteless "comedy," and anime. Aliens would add something else--decent horror. In the right hands, you know, people who actually care about good storytelling, there's something with whopping potential in there. Use a good style, too, to bring out the aesthetic of the world.