I just think referendums as an answer to something like this are bollocks- i'm not sure that Californians vote on matters as huge as this?
Under the California Constitution, three things require referenda: amendments to the California Constitution, most bond measures, amending a law passed by referendum. Additionally, if enough signatures are gathered, anything can be put on the ballot.
It's funny. I believe the exact opposite you do about referendums. They shouldn't be over the small stuff. That's what the legislators are for. Major decisions should be left to voters.