Let me clarify,
Full HD as in non HDlite as is seen now on D and E for national channels that are entertainment and educational. This is what most people watch from my experience and what I see on the boards here is what most are looking for in hd. For these channels that are the mainstay they should be full HD.
HDlite would be fine for less popular channels and programming thats not a daily and hourly prime time viewing such as news, weather, and sports could go into hdlite since the first two are marginal viewing and not entertainment unless your into the pain and suffering of others for news and a science nut for weather, sports well thats for those guys who like watching sweaty men in spandex clothing chase each other to get at the ball one is carrying and eventualy end up in a big man pile but hey to each his own perversion
Cutting some hd channels down to hdlite would free up some bandwith I would think to allocate it for channels that are mainstay programming and bring in the money on a consistant basis and maybe toss a bone to the sports crowd for the big events like the superbowl and world series in full hd.