Indeed the RESULT we have is from a Changing of Concept/Idea from the Inception by Dan O'Bannon to the Changes that gave us ALIEN.
By Virtue of the Theatrical Cut having NO EGG MORPH it allowed for James Cameron to think OK we have Eggs, and WELL we see that Eggs are LAID and so the Queen Concept was BORN.
The Original Concept being more ALIEN and more Parasitical
Before we had ALIENS we had those Eggs as something Ambiguous but Ridley Scott saw them as some kind of Bio-Weapon that the Space Jockey was using.
But it was NEVER really explained as to HOW/WHERE/WHEN the Space Jockey had got those Eggs... so all we could Speculate was...
1) They are a Pre-Existing Organism the Space Jockey would take to USE as a Weapon.
2) There was a Pre-Existing Organism the Space Jockey would take to Experiment/Evolve into what became those Eggs.
3) The Space Jockey had Created those Eggs from basically Scratch.
Ridley Scott had a FEW ideas of where he was going to take us back before ALIENS... he had proposed that the Xenomorph could become something Intelligent and KILL all the Crew of the Nostromo and then Mimic the Voice of Ripley to LURE in a Rescue Team. But this Change/Ending was NOT what FOX and Walter/Hill wanted.
He had wanted to do a Prequel that would look at the Connection of the Space Jockey to the Xenomorph and saw those Eggs being he Remnants of a Once Alien Civilization,( Warlike and Self-Destructive) and he would Explain as to WHO they was and WHY the Space Jockey had them.
Ridley Scott had also wanted to go back to ALIEN after ALIENS but it seemed that he was more interested in Evolving/Exploring the Space Jockey....
James Cameron would have wanted to go to a Xenmomorph Hive World and Evolve on his HIVE Concept more.
with the Movies that followed and the AVP Franchise then it had became kind of a Accepted Fact that the Xenomorph Eggs are LAID by a Queen and so the Space Jockey would have either been a Species who had either.
a) Came Across the Xenomorph and saw their USE as a Weapon.
b) Came Across the Xenomorph and had intended to STUDY them and maybe Experiment with them. (This seems the Story behind the Giant Race Discovered in STARBEAST).
But as it stood it was LEFT open to Interpretation by the Fans, the Prequels came along and attempted to STEER AWAY from the Idea/Origins but then also Changed Plan to give us a Different Origin Story.
So we DONT know what the Plans would have been to Explain those Eggs on the Derelict... i am NOT 100% that Ridley Scott would have based his NEXT TWO Movies around the Queen from ALIENS... and i would Suspect that the Egg Morph may have been USED to some extent had he been able to Continue.
Steering away from Ridley Scott one of the Concepts by Blomkamp for his ALIEN 5 Project did seem to look like maybe HE would also have Explored the Egg Morph but if thats the Case and to what Context we just dont know.