Actually, I'd be open for this. I know Blomkamp wanted to do his film and by that retconing Alien3, which I'm not keen with. Though, I'd be open to it if it includes David discovering Ripley, Newt and Hicks.
Though, have Alien3 dark ending were David takes Ripley, Newt,Hicks, and a group of Colonial Marines back to earth in one of the engineer ships. Ripley and crew try their best to stop the inevitable without success. Have it with most of the crew dying in the process leaving only Ripley and Newt, and witness in utter horror everything they fought for in Alien and Aliens go to waste as David fulfills his innermost desire, the destruction of humanity, as he unleashes an army of xenos upon the earth, killing anyone in their way.