I just found that you can add any command from either you STB, AVR, or TV from the settings screen to the transport Tab This truly will enable you to control a separate device First you would have to learn all the commands from a new device to an existing device Then you have a full screen to add your commands
I also see that the custom stuff i already add to my full size keyboard i can still use it with the harmony app on my i pad it would be cool if they come out with a app that it made just for i pad