The original Alien soundtrack by Jerry Goldsmith is a masterpiece.
Featuring never-before-heard sound-effects and an elusive tonality, it was also a way to reconcile popular movie expectations with a more modern expression.
This review states that the composing team carried over sound-effects from Jerry Goldsmith's bank. Maybe so, but their use of conventional tonality in retrospect is rather disappointing. The grand orchestral displays say nothing new. Jerry Goldsmith's "alien" universe (pun intended) replaced with a murky string haze.
Why fall back on cheap effects when the series started out with a truly revolutionary sound? It may be a lot to follow up, but there is no substitute for creativity and intelligence in music, film or modern. These composers should truly think outside the box and start researching the advances made in tonality that were already discovered long before they were born.