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.
but i do not thing that it will ever happen, hope that in future the government also have to accept bitcoin as an anonymous character because of the pressure of the people on governments.