Worst. Idea. Ever.
I have never bought into the whole cloud computing idea. It is just a whole load of fail waiting to happen, from cloud providers going bust to the NSA cherry-picking your data to being held hostage to vendor lock-in. Now by having chunks of your games being served up from some data center in the USA your going to get slapped with latency issues (sure, 20ms in America might be fine for yank gamers but 200ms for aussie or brit gamers is just the suck) And then how long will your game last? Publishers in the game space go bust all the time and with no one to pay the cloud bill gamers will be left to pick up the tab paying to play games they already own, then eventually they will all stop working a generation or two of console later when its no longer commercially viable to provide the cloudy side of the game any longer.