Hate to be a buzz kill here but I will wait until I see some actual specifications.
If all it does is send power and audio through the pogo pins, I have a wonderful Blurex case that props up my N7 for $14.99.
If it adds additional microUSB functionality like miracast mirroring or better OTG support, then it will be totally worth it.
I guess the ease of docking the pogo vs plugging in a microUSB cable is a draw, but not enough to make my christmas.
EDIT: Just debating myself here, but having the dock ported to my home stereo via the 3.5mm audio jack would be a convenient set up.