NRPN messages module?

[xandra-max (Lejandra)]

This would at least require support for 14-bit MIDI, which isn’t available yet but is on the way in Rack v2:

Rack development blog

In Rack v2, VCV MIDI-CC now supports 14-bit CC commands (i.e. MSB on CC 0-31, LSB on CC 32-63). The Gamepad MIDI driver now generates 14-bit CC commands. [2020-02-14-134742_1600x900_scrot]