Exactly. Not to mention, I'm against using the scenes from the original to replace the SE scenes while keeping the "unaltered" scenes from the SE, and here's why:
1) I'd rather have consistent quality throughout, even if it's not 100% up to modern standards, than a patchwork of "Hey! That looks like it was shot yesterday!" switching to "Whoa ... that looks ugly compared to the last shot!"
2) No amount of color correction or even Adywan's color-masking-layering process for "Revisited" can fix the 04 SE to contain the same color information that is present in the laserdisc masters. Look at the ESB Star Destroyer scenes - in some shots it looks like the entire scene was rendered in B&W with a blue filter put over it to hide that fact.
3) There are many subtle 97/04 alterations (R2-D2's space coloring, garbage mattes, subtle effects "fixes") that could easily go unnoticed in such a "patchwork" project. As a purist, I believe that everything, even effects gaffes, should be preserved, and for most the temptation would be too great to, say, leave in the 04 edition's Rancor recomposite instead of replacing it with the 83 effects.
4) The grain issue. The grain reduction on the 04 DVDs was taken to an extreme that lost some visual information as well as make the image look too "plastic"-like to me. Plus, the GOUT/93 laserdiscs' DVNR smearing wouldn't mix with the 04 DVDs well, along with the fact that there seems to be excessive grain on the 93 LD/GOUT (probably from using a source at least 2-3 generations away from the negative). (That one kind of goes hand-in-hand with #1, but whatever)
So yes, the X0 project is, indeed, very important to many people here, especially the "purists" like me. I enjoy Adywan's "Revisited" very much, but there's a reason I bought the expensive "Blade Runner" boxset - while I'll watch the Final Cut, I still feel the previous ones must be preserved, and I will watch them from time-to-time.
As of right now, my perfect "Star Wars" set would be a 2-disc edition for each film, with disc 1 being Adywan's "Revisited" and disc 2 being an X0 Project-sourced preservation of the theatrical version of the film (splicing in the GOUT's original crawl for SW, adding the mono and original stereo mixes, and converting to anamorphic WS).
Sorry for the unnecessarily long post - I just feel it's important for people to understand why this project is so important to some of us, even with all the "vingage edits" or "revisits" in the world.