Bad idea IMHO.
Why not a compromise we can all live with?
Make another Alien film, with a new cast etc...
Similar story and theme to A1.
Not exactly a remake, but an unrelated sequel in the same universe as the original, one that is virtually a re-make, but is actually a sequel.
This way it adds to the series. Yes is coveres old ground, but it has been 25+ years since A1, and this way we can "have our cake and eat it too".
Instead of re-doing to the movie, make a re-do "like" movie sequel.
Maybe call it a "redux" movie or re-sequel.