Looking for MIDI note swapper? Here’s one for up to 16 drum pads. Ought to work with any MIDI input stream. Still need to test that part. NoteMatrix is currently on sale for £4.60 ($5.29). Requires full Kontakt.
EDIT: On Windows, I’m getting the following script warning:
SCRIPT WARNING (Line: 4891, Script: 0): invalid slider value (clipped to min value)!
I’ve emailed the dev and will post any response that I get.