I can understand what you say - it must be frustrating with different companies making new standards without consulting, and expecting others simply to follow.
Still: there's an industry-wide challenge to make midi control more usable, and a variety of solutions being tested (Roland are another, of course, who are trying something different). NI's implementation is the best I've seen so far, especially because it's you who would be designing the mapping. This seems far better than AKAI's Advance system, where they simply make it up themselves.
I'd rather fxpansion decided!
Here's a video showing the integration https://www.native-instruments.com/en/p ... es/videos/
I'm not sure where the actual developer kit is on their website, but there are many smaller companies making their stuff compatible so I'm sure it would be possible to make contact.
https://www.native-instruments.com/en/p ... eries/nks/