It hasn’t been offered because it is not actually an option to do what you stated.
There are prescribed rubrics for the faithful. If you choose to recieve kneeling, the kneeling is the proscribed gesture of reverence in and of itself. If you choose to recieve standing, the proscribed genture of reverence is a bow of the head.
Those are the two licit ways of recieving Holy Communion,
Adding a genuflection on your own initiative would be illicit.
If you recognize kneeling as a licit manner to receive Communion in the US, then genuflecting before receiving the Precious Blood would also be acceptable, based on the same interpretation. Let me explain:
From the General Instruction of the Roman Missal, 3rd edition, March 2002.
The following norm is the universal norm found in the Roman Missal. Note that each Bishop Conference determines the particular norm for its own country. By the general law, each adaptation is then submitted to the Holy See for recognition.
160 The priest then takes the paten or ciborium and goes to the communicants, who, as a rule, approach in a procession.
The faithful are not permitted to take up the consecrated bread or the sacred chalice themselves, and still less hand them on to one another. The faithful may communicate either standing or kneeling, as established by the Conference of Bishops.** However, when they communicate standing, it is recommended that they make an appropriate gesture of reverence, to be laid down in the same norms, before receiving the Sacrament.**
**U.S. Norm
The following adaptation of GIRM 160 was approved by the Holy See for the United States.
**
160. The priest then takes the paten or ciborium and goes to the communicants, who, as a rule, approach in a procession.
The faithful are not permitted to take the consecrated bread or the sacred chalice by themselves and, still less, to hand them from one to another. The norm for reception of Holy Communion in the dioceses of the United States is standing. Communicants should not be denied Holy Communion because they kneel. Rather, such instances should be addressed pastorally, by providing the faithful with proper catechesis on the reasons for this norm.
When receiving Holy Communion, the communicant bows his or her head before the Sacrament as a gesture of reverence and receives the Body of the Lord from the minister. The consecrated host may be received either on the tongue or in the hand, at the discretion of each communicant. When Holy Communion is received under both kinds, the sign of reverence is also made before receiving the Precious Blood.
The following is from Karl Keating who is president of Catholic Answers and editor-at-large of This Rock.
To summarize: If you receive Communion standing, you should make a sign of reverence just before you receive. What should that sign be? Inestimabile Donum doesn’t specify, but one could argue that the priest and people should make the same sign, to show unity among themselves. What sign does the priest make? He genuflects. This suggests that genuflection, then, is the most proper sign for the people to make. But it is not the only sign they may give. They may give some other sign of reverence, such as a deep bow or even the sign of the cross. What is required is some sign of reverence, and the choice is up to the communicant.
My friend was an evangelical. He has never received Communion before. I can see how at a rail this receiving from the chalice kneeling would be doable, but to kneel down in line in front of the priest/extraordinary minister seems like it might invite a spill/confusion. What do you think, in an absence of a rail?
