People keep bringing it up in here because this is an AvP forum....so it's inevitable.
But, my two cents....the Alien universe is it's own thing...and the AvP films were two-off abominations, a way to make easy cash with tepid talent. The idea of AvP in and of itself is the very definition of mediocrity.
ALIEN began as Scott's baby, he started it and he can take back ownership, period.
I only hope that if this mythos continues in further films, Scott remains as a producer to ensure quality. I love ALIENS but I don't want the epic saga that Prometheus introduces us to to be bastardized and dumbed down for summer fair, of which James Cameron seems to do so well.