wondering about this as well.
i was looking around mlrv the other day and saw the arc 2 / arc 4 tabs. they seemed to recognize my arc, but i couldn’t get any noticeable results or find documentation. how were those intended to function?
in stewing on how i’d use an arc with mlr i came up with volume for 4 groups, with group level metering on arc leds. toggle or hold a button on grid and switch to send mode to control aux send levels for each group. maybe another button press goes into fx mode, or generic midi cc mode so you can then control 4 separate fx parameters. but then you’ve got pages to jump thru and i generally avoid pages…