Actually, one only has to read the original novel by Alan Dean Foster to understand the importance of the Space Jockey at that time, what really made the creature legendary is boards like this one, fuelling speculation and offering one theory after another. Nothing wrong with that of course, I think the Jockeys are an important angle to the grand scheme of things, I would have liked an Alien Prequel just to know more about them so they really did become part of the mythos. But as it stands, like a few things that were dropped by FOX during the making of Alien, it does seem likely Scott, rather than risk his reputation screwing things up as the father of Alien, would rather go the safe route and give us the best of both worlds otherwise known as a spin-off, where if it doesn't work it doesn't really matter anyway, AKA AvP. I don't know about you guys, but considering I waited 30 plus years just to see Space Jockeys in an unrelated Alien film, I find that so disappointing and wonder why bother!