Sure it is. And if you want to burn your retenas with that 4ft cable then be my guest.

Not saying that a longer cable should be in there, but the ability to utilize the device when connected to a screen larger than 15in with a wireless input device should be doable without the user needing to edit a config file.

Now, I could propose that the TV-Out feature should append that config file for bluetooth accessory usage when the 3rd ring is "activated" for such usages... but that would be me thinking like a UX guy again