1.	What's different about this system is that you subscribe to channels instead of clicking-and-waiting. I feel that nothing is lost with this approach, because video on the Internet never worked for me, and probably for many others. However, streaming news items through RSS works quite well, and it's a simple matter to teach RSS about multimedia payloads.
2.	Of course there's a change in user interface. You never see a video or music document until it's fully downloaded. The computer does the waiting, not you. In the system that Marc and Adam envision, a video DJ, someone like Adam at MTV in the 80s and 90s, someone whose judgment you trust, or whose tastes you like, is pushing high fidelity bits onto your hard drive, using no more hardware and network connections than you already have.
3.	In the world that Adam and Marc envision, there is no central authority, no spectrum to allocate, it's open to amateurs, like the Internet itself. We are not hoping to recreate the flat everyone-is-the-same world that television dictates, quite the opposite. With inexpensive video and audio recorders, and personal computer-based editing systems, all you need is time, ideas and passion to create; and with a format for subscriptions, everyone who wants to, can be a content provider.