Upon dwelling on PS Vita TV a fair bit, it's a great concept...but the execution is just dire.
The majority of Vita games won't be compatible due to touch screen and rearpad input requirements.
The lack of 1080p is a massive oversight, especially if you're pushing streaming of the PS4 to another TV (though really, it's just identical to the PS4 -> Vita one, so won't that be at a lower resolution anyway?)
The lack of internal memory and necessity of the expensive memory cards is ridiculous.
Sony, you raised my hopes and dashed them quite expertly, bravo.