If we remove the metaphor of Father and Son from our church vocabulary, we miss a lot of things. In the metaphor God as Father God want to state that He is like a good father of world, a father guiding and educating his children to walk in the right way but correcting them if they do wrong, and a father ready to protect his children from their enemies, disaters and to be helper any time we need Him, a father want If removing that metaphor we only imagine that God is only a ruler, God does whatever He want to do to us, and God is far from us.
About metaphor of Son. We know that Son was delegated by Father to the world to execute a plan. The plan was The Son had to die on the cross to save man from their sins. Only by His Son that was unsin God can save man. This is the duty of Son. We can imagine if the metaphor Son is not exist, it means the saving plan is not exist too.
About feminine methapors of God, I like the metaphors of a mother quieting her child on her lap and of a mother comforting her son. Both pictures the gentleness and care of God like mother to her child. God will quite us if we are depressed or sickheart, and God will comfort us if we are sad, sorrowful.