Maybe it would be useful to people if they could choose the ins and outs: DIN, USB or DIN+USB.
The various routing combinations could make for a large set of options: -
3 MIDI port Options, OFF, IN, OUT, BOTH makes for 64 possible combinations. It would be preferable to have 3 separate parameter, one per channel. but I'd like to keep the global options easy to navigate, so a sub menu would be needed.
I had a recent request to simply disable MIDI OUT on the USB Host port. This is just a single parameter, but obviously very limited.
Let me know what you think. Is this limiting you now?
This may be an opportunity to introduce the idea of Ports to the ARP. For example, each of the four arps could be assigned to a port individually, in addition to a channel. Instead of arp 1 (and 2, 3, 4) having MIDI Channel of 1-16 in 'midi out' in 'set' mode, a second push of the 'midi out' button could select a port. Port would be USB-A, USB-B, 5-pin DIN, or all.
This could be interesting, but I'm not sure how much value such flexibility would present to the user. I can only imagine it would help if someone were to use an ancient 5-pin DIN device that could only listen in OMNI mode, in addition to a modern USB MIDI device on another port. Might be helpful in a minimalist setup. Then again, might not.