If you buy three new TVs and three new BD players from Apple, and send everything that you currently own to the toxic ewaste dump.
Or, buy a $200 Logitech Harmony remote and keep your existing kit.
I have this image in my head of some Apple exec reading this post and being utterly confused.
"Keep your existing kit? When you could just dump it all and buy a 100% Apple solution? Why would you do such a thing?
There's no denying there's massive scope for improved integration between home theatre devices, but does anyone believe Apple is likely to provide such a solution which plays nice with your existing devices?
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You already own it. The Apple TV remote.
Please, no. Thank God for the iPad Remote app as the AppleTV remote is horrible. It doesn't even handle its limited functionality well.
The 'arrow' buttons are too flush with the Select button, meaning you'll be constantly hitting that instead of hitting your desired direction. Try entering a Wifi password with it, it's a nuisance. And the menu button is almost flush with the remote face, so you have to look down to find it. But at least it looks nice.
Your other ideas are good, but please Apple don't use that remote control!