China is headed for a big economic crash which may make them more volatile as far as the territorial disputes are concerned, there is a distinct possibility that there will be a regional war in the far east pretty soon. Life for us will be about the same although a lot of China's money will be in the US housing market. China is nearly sinking under the weight of their own army, but they are a cyber threat to be sure.
China will never be a superpower. Once Obama's massive debt forces the US to default on the bonds China is holding, China will go broke
Considering how they treat their own citizens, its a safe bet they wouldn't play any nicer on the world stage.
Lots worse. China's rapid industrialization is detrimental to the earth and society.
like a beehive
If their growing middle class demands democracy, maybe better.
They already are one of three superpowers. They have Veto powers, and they like to keep things on a delicate little balance in the Pacfic...so, it's a little late for 'what if' situations, the country is as much an importance to World Economics as they are a danger to Regional Security.
I'm on the fence.