Because most of us cannot do Apple, I would like to get google play leaderboard services alongside Game Center- as I want to promote SB3, and host a event, where the winner gets to add a custom ship into the game (as long as its reasonable)
However, instead of adding a new block, why not rename game center to leaderboard and add new compatabilities when needed.
Some things for the future-
Steam compatibility
Amazon comparability
Blackberry (although it hasnt been used in a while)
More…
Yeah, adding the Google Play stuff to the leaderboard block isn’t a bad idea. I never added it since noone had ever asked for it. It will probably take a little while to get to, but it should be totally doable.