At this point, Apple is wasting a strong health branding component with its Apple TV product. Between the watch, iOS Motion, and Health Kit, Apple TV should be much more proactive than apps limited to logging meals (still easier to do on an iOS device) and offering coaching advice.
It’s a too bad that third-party controllers don’t yet support motion controls. Could you imagine how great a balance board would be with an Apple TV, or a connected treadmill? There’s a lot of opportunity and potential for this hardware, especially when combined with other parts of Apple’s ecosystem in both hardware and software.