Store app save data to Google Drive

One of my biggest problems with using a tablet and a phone is the way that I can have apps on both a tablet and the phone but they're completely independent.

I go out play bad piggies on my phone come home and have a completely separate version on by tablet. The save game data for this should be tiny bits of information surely. So why not just have them sync up to google drive, so I can play on both.

This would be an advantage to the android ecosystem of having apps rather than tablet and phone apps, iphone couldn't do this as the apps are different. It'd also mean your app state is backed up if you ever lost your phone.

Anyone else think this would be helpful. Hopefully in 5.0 but I doubt it.