The Mass is not something that we cobble up for ourselves, as Pope Benedict has said many times, most especially in Spirit of the Liturgy.
While there are options that a priest may use for the Mass (Confiteor, Prefaces and Eucharistic Prayers), he cannot deviate from the norm. Furthermore, he cannot use, for example, the Eucharistic Prayers for Children when a majority of the faithful are adults. He also cannot change the words of the Insitution Narrative (Consecration) of the Eucharistic Prayer.
Everything he does is governed by the Roman Missal and the General Instruction of the Roman Missal.
Incidentally, regarding the Distribution of Holy Communion, Francis Cardinal Arinze answered a question (as posted in Adoremus). While the question deals with intinction, he makes some very telling remarks regarding the fact that we receive, not take when we go to Communion:
One thing I’ve seen before [is] where they have the ciborium out, and people come up and take our Precious Lord out of there and dip our Lord into the Precious Blood and place it on their own tongue themselves.
Forbidden. Not correct. Because the nature of the Holy Eucharist is such that the person who is not a priest celebrating the Mass must be given the Body of Christ. You say “amen”. And you receive, on the tongue or in the hand. If you are not the priests celebrating Mass – if you are the deacon assisting – you must be given [Communion]. You may not take.
Even if you are bishop or cardinal, and you are not celebrating that Mass, you must be given. You must not take.
For example, if you watch us in Rome in St. Peter’s basilica or square, when the pope is saying a major Mass, there may be 40 cardinals, 100 bishops. When we are not concelebrating – we are wearing red vestments but we are not concelebrating – we are just assisting at Mass as all of you who are baptized. When it is time for Communion, we receive, exactly as everybody else. A deacon comes to us and says “the Body of Christ”. I say “amen”. He gives to me, and the same for all.
None of us is allowed to take. We must be given. This is the Church law. It is not to lower anybody, it is just the nature of the sacrament. Even when Christ multiplied bread and fish, He told the apostles to distribute it. It was a sign.
So the Church that regulates Eucharistic practice says that the holy Body and Blood of Christ will be given us. We will not take. Only the celebrating priests or the concelebrating communicate themselves. Everybody else must be given it, even if that person is a bishop or a priest.
In other words, we just can’t take. We must receive. Furthermore, the Extraordinary Ministers of Holy Communion must receive the vessels from the celebrant and/or deacon. What you described is not supposed to happen.