the last game i have pre ordered in a store was remember me and i honestly cant say i regretted it. digitally was titanfall, since i did play the beta and really enjoying it, but i do agree that it is a problem to give/sell stuff separately that should be in the actual game and without knowing how the actual game really would be. tomb raider had an additional tomb to explore, which was a nice tomb and sure took more time to solve it than the others but this clearly should have been in the actual game without being an pre order bonus or DLC as such.
but this DLC for isolation, i dont see this a major issue. after all, you play as someone else and thats the main story. the DLC is additional content. the same as with ME series. pretty much most of the DLC i have purchased were really awesome and worth the money and certainly a good addition to the game.
never the less, i still will not pre order alien until its out. after the downfall from the last alien game, i sure wait for videos, comments, etc to make up my mind. if its as we see it now, im in and get the DLC later on if i generally like the game.