I’ve reverse-engineered the .tsi binary file format specification, which Traktor Pro by Native Instruments uses to store its Controller Mappings. I am hoping this should open the gates to new power tooling for MIDI controller mapping power tools (Traktor’s own being rather sub-optimal).

The project, documentation and instructions are here: https://github.com/ivanz/TraktorMappingFileFormat/wiki

Can’t sing enough praises of 010 Editor by SweetScape which enabled me to write scripts and define data structures incrementally on top of a binary blob.