The extended Vickers/Weyland is MUCH better than what's in the film, even though the dialogue is still very on the nose. But it also reveals that in the original cut, Vickers knew about Squidbaby--she even refers to "that thing squealing next door"! The alternate Shaw/Holloway bedroom is also much better--Noomi really smacks the shit out of him! So satisfying.
The speech about "the sun creating man" is also here, delivered by Noomi--unfortunately the scene is ruined by Holloway making an ass of himself in usual fashion and deflating the scene completely.
On the whole, though, these aren't terribly impressive and much better than what's in the film now. Hopefully the additional scenes on the Blu-ray are better.
