For this use, MidiFlow or MidiBridge are better fits, although I don't know if either will do what you need. MD is much more of a modular MIDI controller, as we don't do HUI nor Mackie... in certain cases it makes sense to control MD from an external MIDI controller -- that's out pedalboards feature -- but in that case, you'd map up EACH control. Not at all what you're searching for.
Does that help?