Honestly, I feel the Dog Alien is a great contender for the 1/4 scale treatment. It's a popular item and one of NECA's best Aliens. furthermore, the Dog Alien has been released no less than 4 times by NECA already. So they are confident with it.
So, yeah. I'd say it would be a viable candidate for a large scale re-issue.
-Windebieste.