None of this damaging retcon nonsense. It's divisive and damaging in the extreme for no gain other than needlessly bringing back a pair of characters that have already run their distance.
Finish off the series with a direct sequel to 'ALIEN: Resurrection'. Wrap it all up properly and put Ripley 8 (Ripley in general.) to rest, finally. There is so much potential here to finish the series responsibly without relying on comic book variety indulgent tangential fan wank.
-Windebieste.