I think the egg-shaped cointainment from the Director's Cut of 'Alien' is not humans being transformed into eggs... It is just humans being coccooned for impregnation or for food... maybe this is just a reflex behavior by the Alien, like a worker ant doing the same patterned behavior...
But introducing, this late in the game, an aspect that is so divisive among fans, and was solely presented on a DC 30 years after the first cut, as now canon would do more harm than good to the franchises...
That is just my humble opinion here... If they give a fullproof explanation for this onscreen, one that pleases all fans, then why not...?