this is they way to go
However parishioners who meet the church screening standards for adherence to church doctrine can be offered special religious services to bless their marriages that have been registered by the government
similar to Europe where people have civil service to get married legally and optional church services to bless their marriages
Ministers and priests will no longer be licensed by the government to perform marriages. No great loss. Go to a wedding registry in city hall. Church marriage returns to being a sacrament. Church membership in good standing and public statement of faith returns to being a requisite
I like the idea. However, I fear the radical gays will try to infiltrate churches, then go get the civil marriage, and demand the church blessing on the strength of their membership in the church and their legal civil marriage license.