Call me old fashioned. I’d rather have an Apple TV (display) or a car. Granted the car would most probably be out of my price range.
Ultimately, a television with an AppleTV built-in would also be out of most customers price range -- which is why I personally don't think that either of the products you're suggesting are likely to come to fruition, outside of the "CarPlay" interface.
Apple has largely refocused their strategy on markets where there is high turnover... that is, they rely upon customers who are willing to spend more money every year or two years. That's (unfortunately) one of the reasons that they haven't been focusing much on Macs; while it was the product that made them to begin with, and as such, will probably always touch a soft spot in the heart of older Apple execs, it's simply not replaced frequently enough to really keep Apple in business.
Likewise, for televisions. I'm going to be replacing the TV in my home office soon -- but the
only reason for that is that my son cracked the screen of the one that was already there. Otherwise, that two-year-old TV would probably have stayed in place for at least several more years -- just like the 2012 iMac, sitting in that same home office. Apple allegedly looked into building their own "smart TV" at one point, and I personally think that they ultimately cancelled the project because they saw the writing on the wall, and anticipated low turnover.
The current AppleTV device, on the other hand, can (ostensibly) be replaced more cheaply than an entire TV. By that merit, it has the potential to become a high turnover product. (I don't think it's
actually done so yet -- likely because Apple has priced the darned thing far higher than offerings from their competitors -- but the theoretical potential is at least there.)