A Roku service that lets you create your own "channel," or lineup

Obviously, this would be largely based on your subscriptions, but for example, I'd like to watch:

•Family Guy

•King of the Hill

•American Dad

This feature would allow me to select those 3 shows and would then play Family Guy, Episode 1. When that was over, King of the Hill, Episode 1. Then American Dad, Episode 1. And finally, Family Guy Episode 2. Maybe could even have an option to add up to 5 different shows, or more! Even better if it could somewhat run any necessary apps simultaneously so the transition between apps is seamless.