Hi

As I know that each of us has his own workflow and therefore his own requests, I will try to formulate my request in the most global way possible.

Montage is a synthesizer, it needs a DAW to record and edit what we play.

So there must be a full MIDI implementation to record knobs, faders, etc.

The Montage has 2 modes of operation in MIDI: Multi and Single.

However, in Single mode, Montage does not provide information for common mode faders and knobs in part mode.

These are the controllers that emit CCs in multi mode.
Of course these CCs are part / channel dependent and they do not make sense in Single mode.
However they could send sysex in single mode, as it was done for the SuperKnob which can send this information by sysex or CC.

This would allow to fully record our play in Single mode.

Now in a more personal way:

I play my Montage6 form Moxf8 and single mode is useful for me because Moxf in MasterMode can only be send 4 channels.
But even if I play from Montage, I prefered use single Mode.

In midi I want to edit, correct what I have played (keyboard, knobs, faders, pedals, etc).
One channel in one track make this editing more easier.

About arpeggios, I don't use 'Arp midi out' because I think when we are not satisfied with what is produced by a generator, it is better to modify the generator (new arpeggio or MotionSequence) than the generated one.
In addition there is always the problem of arpeggios mode 'SortDirect' or 'ThruDirect'.

I hope my request made sense.