No. How could they possibly get it right?
Which size screen is right? Even if they follow the lead of iPhone with 2 sizes, which 2 sizes of TV screen are right for everyone? Go to Best Buy or similar and take a look at the TV section. You'll see screen sizes ranging from gigantic to nearly tablet small... in a variety of cases to serve a variety of needs. Can Apple pick a perfect right size or two for everyone?
Which display technology is right for everyone? LCD, LED, OLED?
Would Apple include the variety of standard, non-proprietary jacks so that an Apple Television could work with non-Apple products? Quick imagination answer: "yes." But think about it- this is Apple.
Apple appears to desire hardware that needs to be upgraded frequently. How often do people toss out or sell their (1 or 2-year old) television to buy a newer one? How long do people generally stick with a television before replacing it?
Even ultra-thin TVs take up a LOT of storage space, especially if you make a wide variety of screen sizes. Where are these displayed in relatively compact Apple Stores? Where are they stored?
TV margins are said to be razor thin. But Apple seems to lose interest in even existing products that don't hit their margin targets (iPad Mini, Mac Mini, etc). How palatable would the "Apple Premium" be with a commoditized product like a television?
Differentiation- Apple buys their screens from other manufacturers that make TV screens. Those other players are going to pack the exact same screen into their own branded frame and probably price it substantially lower than Apple's price (with their 30-40%+ margin built in). Again, that's the EXACT SAME SCREEN, so it's going to be hard to spin the Apple screen as superior to the Samsung/LG/etc screen when both are the exact same.
Differentiation #2- the UI seems to have the most potential for an Apple touch. However, that is mostly presumed to be the concept of building

TV in. Even the fourth generation

TV UI (10 years in the making now) still gets plenty of gripes & complaints about even fundamentally-simple features such as fast forward, rewind and a variety of issues with the choices in remote design. But further, is an Apple Television going to have a significantly different UI than

TV? If not, one can spend $100-$200 to buy the same "OS" as a little set-top box and use it with the TV they already have or any other new TV including one branded by someone else with the exact same screen.
Conceptually, the idea sounds great and seems to fit into the product mix... but it's the details that punch holes in the dream of it.