I remember how Rage War was described, in how it will "change the universe forever", what do you think it means?
I know it's probably just being dramatic, but it makes sense. Look at all the tech that the Rage has developed over the centuries. After their defeat, this could all fall into humanity's hands. Even before this new bio-tech, they had FTL ships much better than any of ours which allowed them to leave the human sphere, and this FTL tech got improved by assimilated alien tech.
You think humans were very advanced by 2692? Think again once this is over.
I'd love for there to be novels further down the timeline, like in 2700's - 2900's, to show what we did with these new discoveries and what else we developed. One of my many favourite aspects of the Alien franchise is watching humanity grow as a race.