1. It won't happen. Anyone who proposes to raise property taxes in California will be slaughtered.
2. Even if it does, it won't make a difference. There are places around here that are subject to Mello-Roos taxes (not my house, thankfully). Laguna Hills, Aliso Viejo, some of the newer communities have it. This adds several thousands of $$$ to their tax bills. Guess what? They're enjoying appreciation just like everyone else. Its just a part of the price you pay. Besides, an extra $6k per year in taxes will easily be covered by appreciation. Its like gas being $3 a gallon... sure it sounds expensive, but people can make small adjustments to accomodate it.
Cmon, Tabs... you can do better than that