It would suck, the way movies are made anymore they would have to make some kind of romance between Alyx and Gordon (ex: LOTR: Arwen isn't really mentioned much in the book compared to her crying and horse-riding in the movie) that would richard everything up, then they would probably be too preoccupied with turning Gordon into a violence-obsessed freak putting aside the fact that he's a scientist, and would probably be extremely rattled by killing other humans.