I agree with you on principle - that person is not a true Christian. But how do you expect a website to be able to know that the "husband" you referring to who goes to church, raises his hands, and praises the Lord, is also cheating on his wife?

If we find out, do you want the website to ban this member? Or remove the Christian faith icon from this member? What should a website be able to do? This "husband"'s church may excommunicate him, but can a website do that? I go back to the first question, how would CF know that this "husband" is a wife-cheater?
We are basically allowing wedding rings on members' profiles so that members can show that they are wearing a wedding ring. It is not an endorsement of gay marriages. I personally don't support gay marriages. But if a gay person comes into my home, or my church, and is wearing a wedding ring, even though I don't support gay marriages, do I FORCE this gay person to take off his ring? How do we know if someone is gay in the first place? How do we prove it? Do we send in private investigators?
What you stated here is exactly what I am trying to achieve - the Pharisees were the religious folk stuck to legalism who refused to mingle with non-believers - Jesus was opposite - he went to meet the prostitutes, the tax collectors. Let us not be white-washed tombs, like the Pharisees. I agree with you on this point.
We agree here.
I don't see how the new CF, which still has a completely Christian focus, will end up as Religious forums. The membership will not allow it, and neither would I.