The mainly risk is due to the geographical and goverment situation. What could it happen if the China Goverment decide to close the routers. Bitcoin would loose the miner capacity so that will be impossible to mantein the rate of 10 minutes per block.
The current situation is of height risk for bitcoin, from my modest point of view.
Cheers
I find it interesting that the BTC pump was orchestrated right after KNC folded. The chinese being short sighted put profit in front of security of their assets. I believe you are correct in the chinese government now having the power to kill BTC.