great additions for open format djs and turntablists would be:

Key Lock on/off per track, remembered like how the auto gain per track works. this is a great feature for those times you use a wide pitch and do not want the key lock on, but generally have it on.

the return of the 33/45 goggles above each track. a great feature i miss as it was incredible for doing your own transitions.

finally, an offline mixer mode for those times when you need to analyze something but don’t want to unplug/turn off your hardware. i know it sounds a little silly but it’s just a little less wear and tear on the usb port.