It would be nice if the current MIDI CC# for macros appeared somewhere obvious either on a mouseover of the macro or in the right click context (also displaying unassigned if its not assigned yet).
Right now it’s a bit hard to manually check that the midi learn picked the right one or just to check what I assigned previously.
A matrix similar to the modulation matrix would probab;y be a good idea as it will enable the user to see all the assignements in one place. Note that once a midi cc is assigned it persists even if the patch is changed. Therefore having the assingments in a table for reference may be easier for the user to rference.