Regarding the video inputs, I've done some research just now, let me see if this is right. You could use the inputs to "combine" video sources. Like, say I have 10 components or whatever I want to use my tv's video for, but my tv is limited in video inputs, this allows me to input a lot of videos (say a set of composites for vcr and cable box or whatever), when I have VCR selected on my receiver, it will output the vcr's video to the TV. So this takes 2 or more or whatever videos and outputs the right one, thus using only one video input?
Obviously, we would only use this for the lower quality inputs (VCR, my cable box (For now ..... until voom comes on the 16th!), and say a wireless media server or whatever.