Also, the state law wasn't struck down if I understand the ruling. The supporters of a proposition still have standing in CA courts and the Supreme Court ruled in favor of Prop. 8 correct?
Won't this just end up at the CA SC again, eventually?
As to your second point you're essentially calling for democracy, but just in a court of law. Democracy is bad and in and of itself unConstitutional.
It is not democracy per se for a person whose rights have been violated to bring a court case either collectively or individually.
The court has the power to reject cases if the matter has already been heard or to combine similar cases.
Don’t know what the state defense law is.
IIRC in 187 it was the state supreme decision which the government would not defend. So it got to the state supreme court somehow.