TheStreet: The highly anticipated season premiere of “Homeland” on Sunday could well be a cliffhanger for Showtime and CBS execs when it returns to the network in an over-the-top streaming app. The success of the streaming service and its low monthly price vs. traditional monthly cable subscription packages hinges on good content. As the network’s most popular show, viewership for the night and the binge run-up to its return could foreshadow the service’s success or failure.