This was very similar to my rechannelize request from awhile ago, except mine was based on the EDIT/preview mode, rechannelizing the Octopus (echoed) output to the last selected track channel.
Rechannelizing either in record mode (should work when record enabled, but not playing also) or in preview is critical for me because the Octopus has two MIDI outputs and there is not an easy way to route my controller to 32 MIDI channels 
I actually implemented this quickly in my own build of the OS, so it is possible, and I’m sure Gabriel has his own well-thought out recommendations and possibilities for an official rechannelize feature.
cheers
ripe