Damn, the Big Chap return theory/prediction seems to be happening.
Congratulations, Nightmare, for predicting it.
Your idea of a damaged Xeno regenarating/evolving is a cool one and shows a new and unique way to translate what the Pefect Organism is.
But i will not lie, the cast of Romulus stumbling upon a drifitng Big Chap in space still seems forced and lazy to me, so i really need Fede and his crew to come up with something that really makes me think, "Damn, i guess that works.".
Space is suposed to be vast, so the idea that they can find a Xeno drifitng in space simply by going to the last known coordinates of the Nostromo feels a little too convenient.
But at the end of the day, this is not the type of thing that would make me dislike the movie, if everything else is good, but it's kind of a personal irk, so for all i know the movie is still a complete banger.
I love Alien 3 too and the beginning of the movie is also pretty convenient with the way the Queen planted the eggs on the Sulaco.
But good to know that the new Xeno animatronic/suit is "gorgeaus" and the best that it has ever looked.