You don't want any physical device or card involved. If that's what you get, then you must have standards for physical requirements of that card and all communication on it. You're not going to get that - the cable companies were not able to agree on standards for 2-way communication using the present cablecards, which are perfectly capable and already have a standard-making body accepted in the industry. There is plenty of room in the Roamio for downloadable security; I'm sure that's the way TiVo and Comcast are planning to go. There wasn't any over-riding financial or legal reason for Comcast to make On-Demand available in every market, as they have done. Income from tiVo On-Demand users is minuscule. I'm sure a major reason, perhaps THE major reason, for doing it was to start the process of having all their head-ends connected to the internet, and accessible for end-users to choose what they are getting from the head-end. A low-volume trial of the first step towards their eventual goals.