One thing about having a TV remote, it's just a TV remote
The typical TV remote has 50 buttons, looks like a 1970s pocket calculator and, on a modern set, you still have to do many things via on-screen menus. So, one way Apple could go is to replace the fugly TV remote with something more like the current Apple remote (Joypad + 2 extra buttons) as the "fall-back" controller.
For more advanced use, bring your own iDevice. Downside: it needs to be charged; Upside: well, you get a better UI but most of all its all personalised - with your own viewing schedule/series passes/playlists etc.
Look at it this way: your iDevice is now the TV. The big screen in the lounge is just that: a big screen which your iDevice can use when you're sitting on the sofa.
...and if you want a dedicated iPod to If you're on an economy drive you're probably not going to buy a TV from Apple, so what's another $200 for an iPod Touch to keep docked besided the TV?