You can already watch your iTunes content, Netflix, Youtube and whatnot with pretty much any tablet or computer, and pretty much all of those can be hooked up to a TV if needed. Maybe I'm missing something obvious here, but I really can't see any use case for schlepping along an ATV on your travels?
I was responding to a guy who's dream for the next

TV would be "thinner" so it would be easier to pack and take along. That's not my dream. I'm generally anti-thinner in all Apple (next) things because we seemed to have reached a level of thinness where utility tangibles have to come out to make it possible to hit another level of "thinness" (such as superdrive coming out of an iMac so it can have those super thin edges). Why make the iPhone any thinner than the 5s; why not instead keep the "thinness" that it is and fill the bigger case (for bigger screens) with longer-life battery? And so on.
Personally, I'd rather have a thicker and bigger

TV as it only sits on an AV shelf anyway. Everything else on that shelf is pretty much AV component sizes (think satt/cable box or Receiver box size) yet I have this one shelf with this tiny puck on it and nothing else. No one ever "oohs" and "aahs" about the small and thin size of the puck- they don't even notice it. It could be the biggest box on the A/V shelf and the experience that does get the "oohs" and "aahs" (what it brings to the TV screen) would be exactly the same. Of course, I'm not saying to make a bigger box of empty space- it should be exactly the size it needs to be; what I am saying is that the chase of the marketing spin of "thin" and "small" doesn't seem to offer any tangible benefit for an immobile device like this one- especially if it comes at the cost of taking utility out to accommodate the shrink...
The first gen

TV had analog audio out which is generally needed for "Zone 2" receiver use. Instead, it had to go in pursuit of "thinner" and "smaller" so now I also have a digital-to-analog converter box sitting on that same shelf (2 pieces of hardware instead of one plus extra wires to link them up). I'd much prefer to pack in a bit more utility in a bigger box than continue to chase "thin" for a device that is not meant to be mobile.
That said, for the guy wanting to take it with him, releasing the "app" the runs on

TV as a new "front row" for the other iDevices would give him what he wants too (that's all it is- an iOS app running on an iOS hardware platform). And he's already taking a personal mobile iDevice(s) with him when he travels. Go one better and make it so it can connect with the iTunes library running at home so that he has streaming access to everything from wherever he can find an Internet connection (rather than just via the home network- "home sharing" without having to be at home). Why do this? For one, if he has other family or roommates at home, they won't be unhappy that the

TV is missing because one person took it on a trip with them.
I sometimes feel this chase to thinner will eventually have Apple shipping empty boxes claiming they've made something so thin you can't even see it. What does it do? Nothing, because we couldn't actually put anything in it and make it this (transparently) thin. But thank you for purchase (of an otherwise empty box).

I picture iMac 2022 as being a thunderbolt 9 hub branded as the thinnest & lightest iMac ever, priced about the same as the traditional iMac that used to be an all-in-one computer plus screen. Apple will spin it, "we"ll eat it up and shell out $1X00-$2X00 for what will be thunderbolt hubs delivered by others at about $50 or $100, then shell out the rest of the money to add the screen, graphics card, cpu card, etc as a bunch of external boxes. A few will point out that it's only a hub, be called "trolls" etc by the faithful, etc (business as usual).