If TiVo offered an external OTA tuner for the Roamio that allowed you to record both cable and OTA at the same time would you buy one? If so would it have to have 6 tuners? Or would 2-4 tuners be OK? And would you prefer it to be network based, like an HDHomeRun, or USB connected directly to the TiVo? What would you expect something like this to cost? Personally I would love something like this, but I'm wondering if I'm the only one.