Ideally - user curated app lists. Start with celebs and notable people from various industries. If it's successful, eventually expand to everyone, not just selected people. Allow curated lists to be updated by the curator whenever they want.

That's a longer term solution I see. Short term, I just want you to be able to click a button in iTunes on your Mac and in the App Store on your phone to start the app downloading on your TV. That way I could put a link in this comment and anyone who sees it and is interested can get the app in two clicks.