At least this would work well with 2-channel files that the Piano Motifs app is generating you could choose to import all into one clip (as is done today), or you could do a two step process where you manage to split these into two separate clips of your choice.

After having selected a file, LK could detect which channels are present and display a window with tick boxes of which channels to import into this clip. I wonder if a more laborious and manual approach is needed for multichannel midi files: the current long tap on a clip is used to start the import. Of course, this would be more work for a 16-channel file, but maybe you want one clip to collapse 1-3, : any chance that you will make it possible to import multichannel MIDI files and allow the output to be sent out without being rechannelized?

What would you like to happen if the midi file has more channels than you have track channels? If non-matching channels are just ignored, some users and reviews will probably complain that import is broken. Maybe import all into a new scene, but then the current long-tap on an existing clip is not good for starting the import. Would you like a multichannel midi file to replace the neighboring clips in the scene? Probably not. Importing midi is initiated by long-tapping on a clip. : any chance that you will make it possible to import multichannel MIDI files and allow the output to be sent out without being rechannelized?

How to import midi files into ableton