I am looking at a possible layout but it would need mutiple source and destinations along with levels with each combination would make this impossible on MD at the moment (I think)
But.. When you change the Source and Destination, it just changes the part of the Sysex that refers to that choice.
As a Sysex, it would be 10 06 01 AA VV BB
A would be Source
V, value and B destination.
Not too sure how hard this would be to implement.... not too mention with the other 500,000 other ideas already mentioned on this site by the community:)