Other than live sporting events, can you think of anything that broadcast TV would provide that can't be served by the download/sync model? Given the additional chipsets and battery drain from heavy network use I can't see how Apple would view this particular desire as anything more than a need to break the populace from this idea that you watch video programs when some TV network thinks that you should watch them. If the content producers offered Apple access to their content at the same per-subscriber price point that they offer the content to the cable networks then your desires would be met in a much more interesting and appealing fashion.