sometimes in the oughts he had a Q&A column on cfl.ca and I wrote in asking how the defensive signals got from the bench to the defense. In response he wrote me a little book on how the D does its job. I was super impressed that he took the time to go deep with some fan on the Internet.
edit: and to follow onto the question of how to make the coach's show better, I would love more inside baseball about how the game actually works.
as someone who never played the game above the city-league flag football level, I find pro football is an astonishingly fast cycle of planning, reacting, and executing and the mechanics of that are fascinating to me. like, I would love to hear our center talk about how he calls the signals at the line ... the fact that the center can take the play call, eye the D, and then call out useful blocking assignments in one or two seconds in a potentially very loud stadium ... that seems like straight-up sorcery to me. or I would love to hear our QB give an eye view talk about blitz recognition, or about how he makes his RPO decisions.