If the governments won't get into mining, I doubt this pool would turn out successful. I don't think any Bitcoin miner in his/her right mind would join such a pool? Every miner who truly knows and supports Bitcoin won't support such extremely ludicrous idea.
The censorship aspect has been theorized a long time ago, if you control 51% of mining power, you can refuse to include certain transactions, and then just fork if other miners do include them, forcing them to lose all the block rewards. There is some risk that in the future governments will try to regulate/take over Bitcoin, by forcing miners to do this attack.
As pointed out by Eric Voskuil more than a year ago:
[1]"Assuming sufficient resistance, Bitcoin persists independent of Fedcoin as a black market money. At this point the state concludes that the only effective tactic is to compete as a miner. Given that mining is necessarily anonymous, there is no way for the economy to prevent state participation in mining. Thus Bitcoin enters the competitive phase, with the state attempting a perpetual 51% attack."
We'll see how desperate the government regulators would turn out in the next years.
[1]
https://github.com/libbitcoin/libbitcoin-system/wiki/Other-Means-Principle