My difficulty in following the discussion is my ignorance of what the Blu format supports.

I wonder if it is possible for the pure restoration to be imbedded with a version with clean-up, some color enhancement, FX improvements, and elimination of boxes, jump cuts, and matt lines. I wonder if either of these two versions could be pulled on-the-fly off the same bit stream.

If that isn't possible, I wonder whether two versions could be placed on the same 50 gig DL side of a BD. Four and a half hour HD run time?