Here is one perspective, a rather narrow one, on the Bishops Committee on the Liturgy's October consultation on music by the Subcommitee on Music, from this site.
"Notably lacking on the Subcommittee were any persons of color or minority culture, or any women. The BCL needs to correct this omission if the work of the Subcommittee is to have credibility in today's church."
I should add that it is not the case anyone advocated Gregorian-chant-only liturgy. Rather, the position of many was that chant should be a priority and serve as an ideal--pride of place, one might say.