I assume you’re only referring to the readings, not to any other part of the liturgy. As to that, this was done when the modern lectionary was created. The modern cycle of readings contains way, way more of the Bible than it did before Vatican II, so I think we’re still in pretty good shape in terms of the amount that gets read. There’s no worry that anything is getting “short-changed.”
My own personal experience has, happily, generally been that the long form gets read. I guess that’s not the case elsewhere?
don’t think thats its short changing the Word of God, lets you expand the argument to include that the entire New Testament be read every Sunday. hey, one chapter is shortchanging from an entire book, ain’t it?
The Congregation for divine worship and discipline of the Sacraments, under the authority of the Pope, is responsible for the production of the liturgical materials. While the materials themselves are promulgated (published) by the authority of the Pope.
“Regulation of the sacred liturgy depends solely on the authority of the Church, that is, on the Apostolic See and, as laws may determine, on the bishop.
In virtue of power conceded by the law, the regulation of the liturgy within certain defined limits belongs also to various kinds of competent territorial bodies of bishops legitimately established.
Therefore no other person, even if he be a priest, may add, remove, or change anything in the liturgy on his own authority.” SC 22
This is true, but it doesn’t really address the advantages or disadvantages of limiting scripture during the liturgy. Unless you mean to suggest that it matters not at all how much scripture is included at mass, since the faithful are free to read or hear the rest in non-liturgical settings. I would also suggest that in some cases, especially in the past, the faithful were limited to receiving the Word of God through the liturgy alone.