Why not ATC?
Last week I took my first ever JetBlue trip and was somewhat impressed. I had a nice chat with the flight crew waiting for the inbound on my return, and made a suggestion to them which they seemed to like and said they would pass it along. On the channel which shows the map and other promos there is sometimes no audio. Why not have that channel carry ATC communications ala UA's channel 9? UA is promoting this feature and I believe it is becoming more widely used by crews as a marketing tool. It certainly can't hurt.
Just a thought.....