Seems that there are some parameters that will only be mapped to MIDI CCs, but there's an argument to be made for making them available via a bluetooth keyboard.
In my specific setup, I am mapping a number of track and transport parameters to a bluetooth keyboard. Ideally I'd like to be able to control a given track's volume via keyboard keys, say, being able to press/hold Q to increase Track 1's volume and A to decrease it. Mapping up/down keys for each track would easily allow more responsive on-the-fly mixing, instead of the current long hold/choose volume/tweak via the circular loop icon. If this option is available I can't seem to uncover it.