I understand that DVR is good, but I find that I don't need to bother to DVR the shows we watch since I can get them ON Demand or via Hulu. That is why I was referring to mainstream. I can understand the demand on servers, but that means everyone will be watching at the same time...don't know if that will happen given the flexibility. Basically, I still think DVR capabilities are not as important as they used to be, just like no one really records on VHS anymore or remember DVD recorders. I think codecs will improve, the pipe will get bigger and most products will be streamed.
One thing I am not sure of is this "no box" idea. I don't want anything built into my TV that I can't easily upgrade. Display's tend to last longer than other devices (or at least don't get upgraded as often) and I would rather be able to move my old ATV to the master bedroom to make room for the new and I am not going to move my 52" LCD to the bedroom...well I would but the wife wouldn't. Now that isn't saying that I have a box that attaches to the back of my TV. However, it is still a box.
What my main message that I wanted to get across is the UI...it is SO IMPORTANT. So important that Apple chooses a more closed and controlled environment to the apps portion of their products and I don't blame them.
We haven't even touched on the restrictions that the Studio's put on all this.