Hi @IamNaN, thanks for making a separate topic for this discussion. I can share some additional details on my personal Mixtour Pro MIDI mapping.
- SHIFT+LOAD for each deck performs a custom STEM Split operation. I explain how I MIDI mapped this in another discussion: STEMs Split & Dual Deck Modes - #4 by Dysfunk_DJ
- FX PARAM buttons have be mapped to change the FX Routing to Vocals Only for FX1 on each deck
- SHIFT+DECK 2 Headphone Cue switches my headphone monitoring to Split Cue Mode as I often DJ with IEMs. So, this allows me to monitor the main output in one ear and the pre-cueing in the other ear
- SHIFT+CUE jumps to the start of the song for both decks
- SHIFT+DECK1 PLAY/PAUSE performs an automatic Transition to Left. Same for Deck 2
