I think going this route is asking for trouble... unless Ridley Scott is going to Ret-con Alien by releasing a edited version with some extra and modified scenes to fit with the direction they are taking us.
Much Rather is be the Xeno came from some Parasite that the Engineers Re-engineered to make the Deacon but part of this experiment was the Xenomorph or indeed the Xenomorph was a Ancient Weapon that the LV-223 Engineer Re-engineered to get the Deacon.
The Black Goo is thus a massive jigsaw puzzle and David kind of knows how to assemble this to something similar to the Mural, but now he wishes to assemble this jigsaw to Re-create the Xenomorph
Because going the route they are now... leaves more Holes than people care to complain with Prometheus... i have a feeling this movie would be criticized more than Prometheus.
But as long as we have Xenos running around some fans will be pleased, but i am concerned the aim to Please Alien Fans in General, the Fan Boys and Prometheus Fans will instead just completely disappoint all of them