Those "ways" of supporting MPE are absolutely brutal to implement yourself. And it isn't MPE they are supporting but round-robin MIDI channel inputs, which is itself pretty hard to get going in a lot of DAWs and doesn't really support proper recording and editing of MIDI.Kontakt already has ways of supporting MPE, as Slate+Ash Auras library showed... It doesn't need to be in the headlines.
But just for the record in my work this is what needs to be done in Kontakt to get something working w MPE:
* take a sample preset, say Spitfire Symphonic Swarm Clarinet Whispers
* Edit that preset to support the controllers that I want to use with my ROLI controller: pressure, up/updown
* Make that preset mono
* Then duplicate the edited preset x times (however much polyphony you want, I do six)
* Set each duplicated instance to receive a different MIDI input
* Save that one preset
I mention this to gripe, but also since I have EvilDragon's attention... could be that this is the dumb way to do it. But it takes about 15min per preset that you want to convert, at least this way.
Slate+Ash made multis but when I asked them how they said they did all this and more for 16 notes of poly, by hand, and that it was incredibly labor intensive.