Sorry to hear that your 24" wacom cintiq is not enjoyable.

My 27" qhd cintiq tho is superb. I only want a hand version so I can draw outside the studio with customers, live in a meeting or brainstorm session. Drawing on the couch or in bed, and finish a drawing in the same time.
The downside wit this iPad so far i now can discover is not the full acces to adobe suit. Think about this:
I am working on a drawing at my studio on my cintiq I have a few items that i need to finish but I have to go. Can i upload the psd somewhere so i can finish it on the iPad pro? How well works this if my psd is 1,5 gb big? can it handel psd files anyway? How can I acces these files without an finder.
All of this, makes me think if this device would be my biggest friend beside my wacom cintiq. Its waiting for real reviews. Specially from the the digital painting / designers point of view.