This is sounding like good news. As much as I love the xenomorph, and much as I want to know what was going on with the Deacon, I'm glad they're moving away from those aspects, or leaving them to be addressed in the comics. The idea that the Deacon or the xenomorphs were the Engineers' God or some such is just too limiting, and at this point, a bit unoriginal. I want to see a grander kind of space horror.
Not to mention the fact that this leaves the possibility for future proper Alien films wide open.