Interesting! Kudos to you for the idea. It would be great if it could be linked to a bluetooth MIDI controller (Chocolate, for instance), which would trigger MIDI messages to a phone (a cheap Android one would be enough) running your web software, which would route the commands to the Nano via USB. That way, users would have a screen showing the preset, and a footcontroller.
Looking into Bluetooth possibilities, only works in Chrome; Firefox is not supported.
Managed to find uid of nano cortex with android app, so far can pair but the messages need to have different format, I know airstep can send messages even without pairing so nano cortex app on the phone can work properly.