From my perspective I really want as many Colonial Marines as I can get. I mostly only care about the human characters from Aliens though. I might buy the Alien 3 Ripley, and I would definitely buy a Resurrection Ripley, but that's about it from the other movies. The designs of the other characters from Alien and Alien 3 really weren't special enough imo to need figures. Though, I hope they make them so that others can enjoy them!
I'm still waiting for Series 7 over here in Australia, I'll definitely get the Grid Alien, and I'm really excited to get the creature pack. I'm hoping above all else that we get Vasquez in Series 9, and hopefully another marine. I'd love to get Gorman to round out the characters left towards the end, but I know the chances of that are low.
The prospect of Kenner Aliens is interesting, though if they are all silly colours and stuff I won't buy them. The colour doesn't really matter with the Predators, as they are all individuals like humans, but with the Aliens, they all really need to look like my Aliens queen gave birth to them!
Finally, I'm really hoping that we get the Predalien and Newborn figures next year. Even though Randy and most people hate the Newborn, after seeing what NECA did with the unpopular AVP stuff, I'm thinking it will be a kickass figure!