There's a few difficulties that come to mind
Haptic Feedback: There are a few options that can totally screw with your set if you're unaware that they are enabled, that mostly being Sync, Quantise, Snap, Effects On. I'd want to do some research into any midi controllers that harness Toggle switches (Such as
this), making it easy to quickly feel across at what settings are enabled/disabled (And braille label's for the corresponding switches to make it easier to discern). Maybe some sort of Arduino mod if there aren't any available.
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