A survey was shared on Reddit asking if PS4 owners would be interested in streaming gameplay to other devices, such as the Nintendo Switch.
It also references the DualShock controller which would include am ON THE GO screen for play and asks users if an OFFLINE version of Remote Play would be appealing.
I just took a survey for Sony regarding their Remote Play and there were some interesting questions that possibly hint at upcoming features.
Using Remote Play with a PS4 not connected to the Internet.
Playing Remote Play on a Switch, AppleTV, AndroidTV
Hiding unused controls for the game to allow for more screen real estate
A slim/portable DualShock controller for portable gaming
Exclusive maps/accessories for Remote Play
Customizable button layout
Connecting other controllers (Xbox) and mouse/keyboard
Offline Remote Play
PS1 and PS2 games
Parental controls to allow for multiple users to use Remote Play at the same time.