To me, the biggest test of Xi's new government is whether it implements a nationwide property tax. My working theory previously was that this was something Xi wanted to do but was impeded by other factions and special interests. Now that theory will be put to the test: If he's still hesitant and doesn't at least introduce a plan to phase in property taxes, I'll know that this is something he's personally cautious about and my theory will be invalidated.
Property taxes - no matter their political difficulty - will be enormously beneficial for China. It will treat the pathologies of the real estate market at the root, it will open up a vast new revenue stream for local governments, and most importantly, it will bring home prices down. High housing prices is the number one impediment to Chinese families having more children, and the tax could even be structured to exempt families with two or more children.