I wish Sony released a Vita XL for serious people who want to take advantage of remote play. I can already imagine the shit storm of people complaining about the small analogs when controlling shooters. Make the Vita XL screen a inch bigger. Have full click able analogs as well as R2 and L2, and a more comfortable grip. They can also have a bigger battery due to the size. Finally it can so be used as a PS4 controller which saves you from buying a second DS4.
This grip is so awesome, I really enjoyed using it when I borrowed Vita from a friend to finish Golden Abyss. It transforms Vita into incredibly good controller that you can hold for hours with ease.