+1 for min/max and NRPN. Oh, and sysex, while we’re at it 
You can stick the MIDI Ctrl Device in a doofer, and in the doofer macros you can set min/max
(I’ve done this for all my midi gear, and very handy if you need to send NRPN messages to your gear too)
I’ve also sort-of made an NRPN doofer, but I’m curious how you went about it? Mine feels like a cludge 