This would be indeed very useful for MPE use cases, that is more and more found itself implemented into different synths. In our case Surge is MPE compatible, and making that work with Zynthian well would mean that the Zynthian would be the standalone MPE compatible “hardware softsynth” or standalone softsynth ( I really don’t know if that is a thing or how to call it).
The main point here is that there are a lot of MPE controllers, and only a comparatively small amount of MPE standalone hardware synths, this could be untapped potential for the Zynthian, and this same use case attracted attention over another open source hardware DSP proyect i used to be involved with, axoloti.