"So, given fiasco's like the CAHSRA, and the fact that people haven't seen enough return on what they've so recently voted for, I suspect that continuing sales taxes that are expiring will be easier, than getting more taxes out of the voters wallets, until they start seeing more results. I'm seeing this also, in the reaction to nonsense like the road diets, increasing frustration with congestion, and the still inadequate and often poorly operated transit services."

I wish I could share your optimism, but every time one of these regressive tax increases is on the ballot, the sheeple vote for it witch only encourages more of the same. I suspect that people opposing more of this garbage have simply left the state.
There is no hope for California.