"Peter wrote: "you are A CHOSEN RACE, A royal PRIESTHOOD, A HOLY NATION, A PEOPLE FOR God's OWN POSSESSION, so that you may proclaim the excellencies of Him who has called you out of darkness into His marvelous light;
10 for you once were NOT A PEOPLE, but now you are THE PEOPLE OF GOD; you had NOT RECEIVED MERCY, but now you have RECEIVED MERCY." (I Peter 2:9-10)"
So, I ask again, in light of the above why is there any need for intercessory priests? Paul wrote: "For there is one God, and one mediator also between God and men, the man Christ Jesus, who gave Himself as a ransom for all, the testimony given at the proper time." I Timothy 2:5-6 so to interpose any other is to diminish His role. I would take the words of Peter and Paul over the words of John Chrysostom. They had a temporally closer relationship with the Messiah. I neither honor the priest nor am I despising him. I AM HIM according to Peter.
Obey them that have the rule over you, and submit yourselves: for they watch for your souls, as they that must give account, that they may do it with joy, and not with grief: for that is unprofitable for you. Hebrews 13:17
I doubt +John Chrysostomos believed or ever wrote that a priest is the sin qua non of our theosis or that they are "necessary intercessors". The Church always and everywhere has believed that The Church, the Body of Christ on Earth, is defined as the Bishop surrounded by his priests and the laos tou Theou, the people of God under the Lordship of Christ. Without the Bishop, the presbyters and the people, there simply is no Church. But if even one diocese were to survive, then the fullness of The Church exists. By always and everywhere I mean from the 1st century on and by those who knew Christ and were either directly his disciples or were their students. You are of course free to believe what you will, but your ideas are very modern, no more than a few hundred years old and do not reflect The Faith as taught by The Church. The Church does not Teach, nor has it ever, that Peter means that we are all priests in the sense of sacramental priests, but as Christians we are the building stones of the New Temple where Christ is the High Priest. As a Royal Priesthood, we share in the priesthood of Christ in a ministry of evangelization by living out The Faith in our daily lives.