The new scheme may not be perfect but it sure beats what was before it.
The utility companies must build, replace, and maintain generating and storage capacity as well as distribution infrastructure to meet peak demands - even when the weather is really crappy for several days and solar and/or wind are not meeting demand. That capacity must be built, maintained, and tested regularly even if some of it's used only occasionally and basically sits idle most of the time. If your solar home connects to the grid, the power company has to meet your demand those few hours a year when you choose to draw power - and usually at the same time other solar customers are switching to grid power. This infrastructure must be paid for and the occasional users must pay their fair share just to have it available when/if they choose to use it.
The previous scheme, even once eliminating explicit solar installation subsides, resulted in poor and middle class (and almost all renters and those residing in multifamily complexes regardless of wealth) subsidizing the upper-middle and upper class single family home owners who could afford to install solar and could do so.
Ultimately the feed in rate should be determined by a near continuous auction (perhaps every 15 minute block) with the lowest bidders winning on this spot market. As well homeowners with solar (and perhaps energy storage as well) should be able to enter into futures contracts ("I promise to deliver xKW between 1PM and 3PM a week from next Tuesday") which are also auction based and have severe penalties for failure to deliver for any reason except failure in utility infrastructure such as a down line. Perhaps only the power actually fed in (which the power company could simply reject at the meter if they didn't want it at that time) would be compensated.
Additional allowances could be made for solar customers who are willing to accept more risk. For example, if a solar customer agrees to have their grid power shut-off for any or no reason before others, perhaps they would be paid a 5% bonus for power they feed in while being subject to this agreement. And/or, perhaps If one agrees to "disconnect" in the "inbound" direction for an extended period (such as three years on a rolling basis) they could receive bonuses on power they feed in (as they will never not require any generating capacity from the grid for that forward period of time) during that window.
Just a connection to the grid should cost something that reflects the cost of the distribution infrastructure. Particularly in California, this includes billions of dollars over the next ten or twenty years to underground lines to reduce fire risks. These charges should be paid by net consumers, net producers, and "producers only".
Solar customers should, of course, be free to disconnect from the grid permanently as long as they can demonstrate and maintain (perhaps checked via regular inspections) that they are generating and storing their own power without the use of CO2 emitting generators. Reconnection, however, may cost tens of thousands of dollars so such arrangements must be disclosed in real estate transactions.