But the quad, in terms of the films alone, gave us things we didn't already have - Alien DC's (previously unseen) alternate takes of the deleted scenes cut into the film, the Alien3 assembly cut, the special edition of AR... that's new material. And when you're getting a new cut of the film, with footage you've never seen before, I wouldn't call that a double-dip.
So Fox can give us Prometheus's deleted scenes now, and that's cool. But if they simply re-integrate the deleted scenes we've already bought into the film for a later release, that's a double-dip... because we've seen everything. You can bet that a week after this blu-ray is released there will be a fan edit on the internet. Fox isn't going to try to sell us their version of that fan edit. But they might incorporate scenes we've never seen before, so that people might buy it. And that's not a double-dip, in my view... that's new material.
