It would be great if when I select a TV channel to view, it would automatically switch to the HD version of that channel. I live in the UK, and the SD channels come up first, and then (some way down the list) you get the HD equivalents for a few (I can’t think of many instances where I’d rather watch the lower-def version). I guess this would have to be an option within settings, and possibly have the same for recordings?
Personally I delete the SD versions except for BBC1 and then just move the HD versions into position.