Good topic; mostly because it is a good intro for my views on this subject! ;-)
I fully support your idea - but the "realities" of the marketplace and view demographics has to be recognized.
Remember the "Wings Channel"? Yes, there were some great shows on there that I loved to watch, but that's preachin' to the choir.
A few weeks ago, there was a similar thread where folks were jumping all over the aviation letter groups to "wake up" to the success of Flying Wild Alaska. Folks were begging EAA to do a similar show.
Here's what I think of that: Flying Wild Alaska's success had VERY little to do with aviation. It was more about the people. Folks loved the typical teen daughter; they loved sitting on the edge of their seats wondering if the lost snow-mobiler would be found; they loved seeing how a group of hunters would be dropped off in the wilderness, *hopefully* to be reconnected at some later date before bad weather came in.
You, I, and just about every OSH 365 contributor would LOVE to see a channel with nothing more than homebuilder tips or aerial tour groups, but until you inject the human element, an INTERESTING human element, no one else will watch it, no ad revenues will result and, well, you know.
I'm sitting here thinking that every TV producer worth his/her salt is out there scouring possibilities for other quirky aviation-themed shows.
Do we think (and I don't know; and not being sarcastic) that Peterbuilt, Mack, K-worth are out there begging their industry associations to do more Ice Road Trucker shows in order to lure folks to big-rig driving? I'll bet a Coke that they're not. It's the drama, the human element, that sells the show.
Don't get me wrong; done right, the right show could do wonders to stoke aviation interests. I'd personally love to see it happen.