Hi,
The Apple TV app for NBA is now showing Highlights again since teh season started.. However, from all thr information I have managed to gather, the League Pass outside of the USA does not work on the Apple TV. So, you can watch on your Mac/PC, iPhone, iPad, Android phone, etc but not Apple TV.
Of course, if you use an iPhone, iPad or Mac running Mountain Lion, all of these devices can AirPlay the video to the Apple TV.
But I do feel your pain. I would much rather be able to just turn on the Apple TV and have that stream the games directly without using a 3rd party solution!!!!