If folks are scoffing Confession or view it as a "get out of jail free card" they are misunderstanding the Sacrament in the same way Luther misunderstood. Confession is not an exoneration or vindication, it is a reconciliation and healing.
That was Luther's view too, and also the view of many Anglican divines, they continued to commend it after the reformation. They just didn't view it in the juridical terms that Catholicism did, nor did they favor compelling people to receive the sacrament. Rather they considered it a sign of God's forgiveness, though some Anglicans also emphasized the power of the Church to pronounce forgiveness of sins. "All can, some should, none must" is the general advice.
Your view of confession is idealistic. In reality, I could easily see all it doing is getting a person to being less private with their life, not necessarily repenting more. Repentence is not reducible to a formula, its a way of life, don't you agree?
In Orthodox marriage is Sacramental, God sends His Grace to perfect the weakness of our human conditions, where as to my understanding aside from the Lutherans, Protestants universally reject the Sacraments, including the Sacramentality of Marriage.
Anglicans and some Presbyterians are also "sacramental". Anglicans also have a line of succession of bishops back to the apostles.