Asobo released VR controller support, but it is rather dissapointing.
So I will rather pursue the way with physicial MIDI controllers.
To make locating the buttons in blind easier (when wearing the VR headset) on Novation Launchpad Mini Mk. II programmed as FMS CDU for the CRJ, I 3D printed the frame to be attached to the Launchpad to designate various sections of the CDU (commands, digits, letters).
The model (slightly updated vs. the version shown on the photo above) is available on TinkerCAD as:
Novation LaunchPad Mini CRJ FMS/CDU touch reference frame