Nokia should release a 2520 with a 220 remote.
my dream setup.
I want to get a data plan for my tablet that is shared with a phone handset. The handset acts as a remote and a bluetooth headset (and a relay for headphones if needed).
Sony is close with the new Xperia Z2 Tablet
but the "Bluetooth® Remote with Handset Function BRH10" doesn't have a display and can't act as a relay media consumption type device in your pocket.