I like what asus is doing with the Asus Padfone 2. (phone pocketed into the tablet like a picture frame.) It's just a shame both devices cannot work in harmony where one will charge while one is docked, and the other will increase power or ram.
And when you wish to watch a tv show on train or where ever, dock your 5 inch phone into he tablet and presto, and when you need to run undock it and presto.
Technology needs to improve towards this way (yeah im looking at you sony, just build a ps hand held phone already with full integration and stop separating your experia branded phones. or better be left in past.)