I think you're still thinking in terms of 'channels' and 'changing channels'. I think Apple wants to make the television more 'program centered' instead of 'channel centered'.
You'll have an app like 'NFL', where you can see all the NFL games in progress, move to any of the games you'd like, see standings, see press conferences, news stories, see any old footage. All while surfing your iPad as the control. It's different than remembering, oh, 701 is this channel, 705 is this one, etc. etc. and ALL the relevant information is available because we're connected to the INTERNET not just a DirecTV channel. Plus, it will be able to customize everything to your favorite team. If your favorite team is, god help me, the Dallas Cowboys, then you will see a little star in the corner of the screen, with relevant Dallas Cowboy / NFC East information and things like facebook messages or tweets for/against Tony Romo.
You've got to open up your mind and be creative. The current Apple TV is not there yet. Currently, DirecTV is a better choice - if you have the money. But, I can imagine and see what might lie ahead that is so much better. I'm not stuck in the past and an Apple hater. I'm more willing to broaden my horizon. (I'm not an Apple lover either - if anyone pulls off this vision I support them - I'll buy a Microsoft TV if that is the best thing out there - but I can't see any other company as future-thinking as Apple)