If you open the Facebook app on a phone today, you’ll see a link to App Center on the left side that I think most people ignore. And even when you get to the App Center and find an app or game you like, pressing Play sends you off to Apple’s or Google’s store to download. Facebook Home on Android would have its own App Center that would let you download apps directly via your Facebook account.
If Facebook was smart, it would also create a separate gaming hub that highlights not only what’s popular with your friends, but what they’re playing now. That way, you could just jump into a game. This hub would also enable users to tweak their settings for game invitations so you don’t get pinged every 5 seconds to play “Dragon City.”