Just imagine if Peter not Mary Magadeline and the women was the first to see the Risen  Lord.  Instead of the last supper as the center of our liturgy, I believe we would talk more about the Kingdom of God and resurrection times rather than the focus on the historical  Jesus.  It would be a lot easier to have an option for the poor than being  worried about buildings and the power of the world,
I don't believe we would have a USCCB.