I recently used duet display to connect my PC to my iPad Pro - it's very impressive.
 
However the touch interface of my iPad Pro does not update either the Piano Roll or Staff View. 
 
If the touch interface worked then it would be a killer app for my workflow. I'm often working with a classically trained musician who likes to work in staff and adjust individual notes. Being able to touch a note to manipulate it would be incredible. 
 
Any chance Cakewalk could get it going?