To ensure some sort of centralisation never happen, the best way is still to spread the hashrate concentration to multiple new pools. I guess since there is more and more people coming into the game, and a lot more will come I think because of the price rise, actions will never have to be taken.
I doubt that will happen. The Chinese seem really persistent on controlling the Bitcoin mining industry. I think that something really big has to be done if we want Bitcoin to stay as a decentralized currency. And I don't see many more people getting into the Bitcoin mining business because the Chinese look like such a dominant force.
I don't think the chinese ever had any spectacular plan to dominate the mining industry, they having a deeper insight in bitcoin and thinking long term has nothing to do with it. They simply were at the right place at the right time, that is, in a place where the electricity is cheap as fuck. So what do they do? start mining and start investing in more mining equipement for constant gains... that's all. The chinese aren't that bright, they just found a good business. It will stay like that as long as the electricity price in china is cheaper than everywhere else, is that simple.