Garry should sell them MMH, I added silent channels to Paranoid in a minute or two at most with it - now I can listen to it in the car.I would GUESS that the attractiveness of releasing these legacy quad recordings is that they are ready to go right off the shelf with minimal additional work. Anything that needs to be done to the original recording raises the cost and would require more investment up front.
I agree it would be nice, but I understand why they may balk at doing that.