Apparently we wont see the exact ship that landed on LV-426, it'll be a different Jockey ship involved (I'm guessing we will see one due to the confirmation of the Giant Dune Head acting as a pilot).
This apparent recombinant goo could in theory combine with David, enveloping and egg-morphing the android into a version of the alien egg we know.
I think with the eggs in the Derelict, that these were Jockeys egg-morphed (perhaps by the goo) and so their bio-mechanical traits get passed on to the facehuggers within, a half-mechanical version of the jelly-fish like goop the original eggs spawned.
I always wondered if these eggs were egg-morphed Jockeys, why they were so small compared to the Pilot really, however if the goop combines with a creature to form an egg, the chrysalis of the egg could absorb and combine with the matter of the host making the egg a set size...
Now I think that the goop has to combine with a creature to make it a viable egg with a type of facehugger inside. We know somehow a facehugger gets on a Jockey in both films to create a large alien. Its possible the goop to be a type of biohazard, it is accidentally touched by a cut on David, this egg-morphs him, creating a proto-facehugger which infects a Jockey.
On the Derelict, a similar event could have happened to accidentally egg-morph a Jockey and thus another gets face-hugged (the Pilot) leading to the ship on LV-426 that we all know.
Thoughts?