an unlimited framework for midi, as well as audio, immediately puts ardour in the lead. (Imho) Pretty well the only way to get around this currently is to have multi channels per track (which is usually in itself limited to 16 channels per track), or a hell of a lot of tracks with the resultant scrolling.
That is, each voice is a standalone midi route at the low level, but shares view axis with several different other tracks, making up the “voices” of that track. Operations and settings for such a track may (or may not) apply to all voices. This way you’ll get one independent playlist and one MIDI port (routable to anywhere you like) for each voice. Flagstaff Doctors