Jesus did not have his back to the disciples at the Last Supper.  They saw Jesus, his face, heard his words.  

The geographical/liturgical Jerusalem has nothing to do with it.  Catholics are from all over the globe.  They should be able to LOOK, SEE, and HEAR what is happening at the altar.  As far as the priest making the Mass about himself----the altar is the table of offering, of sacrifice--which the priest kisses as he first approaches the altar at the beginning of Mass.  All who approach the altar, bow to the altar---not to the priest.

Your comments about the priest's appearance is stretching it.  Only the Hindus believe that the highest form of union with the Deity is to be completely 'subsumed' like a drop of water in the ocean.  The priests PRESIDES as a complete human person and we, the congregation, as complete human persons bring WHO we are to the TABLE.  Jesus never stated that all who "do this in memory of me" must be "subsumed."