Hi,
With C12 I did decide to jump ship with it and use exclusively the Midi Remote editor since, at the time, it seemed like the best route as I’d be able to replicate all the features except for the scrub wheel.
I did make a basic MIDI Remote that only had a single bank and worked as I wanted it to, but I have since then actually sold the X-Touch One and moved to using my own midi controller I programmed, so I could avoid having to do ‘hacks’.
That said, the X-Touch One will work with the mapping assistant in Cubase once Steinberg fixes some of the bugs with motorized faders and endless encoders.
Unfortunately since I no longer have one, I can’t really easily keep working on scripts for it, but technically speaking it shouldn’t be too hard to at the very least make a script (or even just using mapping assistant) to have it work as a single channel controller that follows track selections.