this is correct.
LD2 allows for this kind of grouped mapping as well.
you will run into problems as soon as you try to map anything more complex. (like 3 band eqs on different MIDI channels, mutliple fx parameters, etc.)
with FFs you will need some kind of CC remapping, as OT still does not do that for incoming CCs.
Doepfers, on the other hand, can be flashed with sysex. well done, doepfer.