As for Hicks, his injury wasn't all that severe. He had an acid burn to the shoulder. Now those of us who dared to watch AVP:R know that even just a few drops of the acid can take limbs right off at the joints BUT hunter-dad didn't have body armor on. Hicks did. He stays conscious until he makes it to the dropship but once he's in Bishop's care he never wakes up.
We've also forgotten something in our adoration of precocious Newt. In 1986 when Aliens came out, Carrie Henn was a child. In 1992, when Alien 3 came out, Carrie Henn had aged by 6 years. Even in Alien 3 Newt looks a lot different from the Newt of Aliens. So if you don't want to kill the character off, what do you do? Cast another pre-teen who looks and sounds exactly like Carrie Henn? Cast Carrie Henn and say she aged in hypersleep? Or just avoid all that trouble by bumping her off?
Yeah the companies actions make little or no sense, no problem admitting that. And we don't need Bishop, Newt and Hicks in Alien 3, just don't kill them off!
As for Michael Collins the character Dance plays, Colonel Ormonde Winter not only survives in real life but is promoted to general, knighted and goes on to fight in World War 2 in his sixties
http://en.wikipedia.org/wiki/Ormonde_Winter
But then truth was never what that repulsive travesty of a film was about, in fact quite the opposite
