I've wanted to build something similar to this for a while now, but formatting the data and getting it to play on whatever combination of screen / microcontroller / storage you have is tricky.
This device is realized really well. The analog TV sounds and fake snow are really cute, as is the volume / channel UI. Those can be turned off by modifying the config, which is nice to have. I love the transparent case and the remote is a nice touch. I really can't think of any other feature I'd want on this device.
If you like miniatures and you're excited about this device, you should definitely get this!