I've seen several people asking for a TV with built-in Apple TV. I'm not sure I see the benefit over a small outboard device. Would you really want to be forced to pay for a new TV in order to get the latest Apple TV device? Or forced to wait for Apple to refresh to new display technologies while Samsung and Sharp drive forward with an almost infinite number of sizes, options, and price points?
You mention cable mess, but doesn't a single HDMI cable solve that? I guess you could make the screen touch enabled, but in a typical TV viewing situation you are not sitting close enough to the screen to use it.
I admit I may be a victim of "old school" thinking here, but since I already have a nice LCD TV, my hope is that Apple simply refreshes the Apple TV hardware, rather than bundling it into a TV.