As we know, the first three movies of Alien take place in the next century, with Resurrection being three hundred years after now give or take.
And in the EU, Sea of Sorrows is four hundred years while Rage War is six hundred years into the future.
This is what I love about the franchise, how it's got different eras and you can make a great historical timeline of it as well as a future based one.
But how far should it go before you feel it's getting too far ahead? I don't see this franchise going to the levels of Warhammer 40,000 and setting this during the 42nd Millenium (its current real-time setting).
I do like the idea of the Alien and Predator stories being set during the 2700's, maybe all the way to 2900's, but it feels a bit funny once it hits the year 3000. Because a lot can change and stories would have to accommodate the societal and world changes. Rage War did it in a great way, but who knows how far humans will exist for in this franchise.
What say you?