Because many people already have X1-6.
And it wouldnt have killed them to fix X6's terrible localization (and maybe not slap us in the face further by removing the voice overs that were optional in the original game itself)
the bonuses were things everyone had really already seen...
and if im not mistaken, werent we promised voice overs and remastered tracks or something?
That was all baseless conjecture by a random blogger... one of the old MMN boys, IIRC. A lot of people bought into it and were furious when none of it came about. Things proposed by this person were:
-X1-X3 to have remastered music tracks.
-X4 to be dubbed by current V.A.'s
-X5 would have had the proper English names of the Mavericks
-X6 would also have English voice acting and cleaned up script.
However, the death knell to all of this comes from Lucas himself. Someone asked him if he was ever called in to do recordings and he pretty much shot that down.
Hell, I was happy enough that X3 was the PS1 version (even if most of the music suffered here) and we got Battle and Chase. Otherwise, it was nice to have all those games in one place.