Of course the problem with this is many.
First off, Christ is among us at the celebration of the Mass in the priest who is Christ in persona, and Christ faced the Apostles at the dinner table, not symbolically east.
Second, this is how the Eucharist was celebrated by the apostles and the fathers of the early Church of the 1st century.
The priest facing east, came after Constantine legalized Christianity and donated public buildings to the Church. The buildings had a large shelf attached to the far end of the wall, and it was there, where the Eucharist began to be celebrated with the priest facing away from the people. Church buildings to be constructed in the future, took on the characteristics of the public buildings of Rome, i.e. a rectangle building as a kings court. Church buildings in the East, remained as a semi-circle of the people facing the altar.
Third, God dwells among us in each and every person present. The priest does not have to offer the body and blood of Christ in the Eucharist to God who is out somewhere in the cosmos. He is present among us.
When Cardinal Ratzinger became Pope. he acknowledged that he was too rigid as head of the Congregation of Faith. As Pope, he celebrated Mass facing the people. If it were so important to celebrate Ad Orientem, he would have.
Jim