Game Center should allow non-game iOS apps to register for achievements and leaderboards. Think about it: Largest Dropbox File, Most TextExpander Time Saved, Longest iStat Uptime, Most LoseIt Pounds Lost This Week.
– One FPS
I would love to see Apple implement something like this, perhaps we’ll see something similar when Ping inevitably expands to encompass apps in addition to its current music-only support. I think lack of App Store support is the single biggest drawback of Apple’s current social networks, I really hope they fill that void before a competitor does. A feature like this could also be a useful point of differentiation for Android or Web OS.