I was thinking about this recently, and was wondering if it was possible to fit all the different versions of a SW film onto one DL disc with negligible quality loss. I was thinking of:

A New Hope
Version I: Original Edition (1977) [No subtitle, original stereo audio]
Version II: Original Edition (1981) ["Episode IV", audio changes from mono mix]
Version III: Special Edition (1997) [missing shots from LD]
Version IV: Special Edition (2004)
Version V: Special Edition (2004) with deleted/alternate scenes from Behind the Magic

The Empire Strikes Back
Version I: Original Edition (1980)
Version II: Special Edition (1997) [missing shots from LD]
Version III: Special Edition (2004)

Return of the Jedi
Version I: Original Edition (1983)
Version II: Special Edition (1997) [missing shots from LD]
Version III: Special Edition (2004)

The Phantom Menace
Version I: Theatrical Version [missing shots from Japanese LD rip]
Version II: DVD Version
Version III: DVD Version with deleted/alternate scenes

Attack of the Clones*
Version I: DVD Version
Version II: DVD Version with deleted/alternate scenes [including Droid Ship sequence]

Revenge of the Sith**
Version I: DVD Version
Version II: DVD Version with deleted/alternate scenes

*The theatrical and IMAX versions of AotC do not have a readily available source.
**The difference between the DVD and theatrical versions of RotS is so minimal it isn't worth including.

Possible? Not? If it is, how does a fan-editor pull off seamless branching in the first place?