Like others, I have my remotes programmed to allow next / previous AND page up / page down. Next and previous work great for television. However, page up and page down work backwards to how you would expect. Pushing page up basically goes to the previous channel -- as it you were at the channel list.
Could an exception be made in television so page up and page down operate correctly? I don't want this to break theater view, obviously, so I think it is only needed while viewing television full screen.