The Liturgical Press is offering a range of musical resources for the new Missal. I'm personally very happy with The Psallite Mass: At the Table of the Lord , which a collection of innovation presentations of Mass parts in plainsong style. I would think that this would work in any parish environment, and would nearly always amount to an upgrade from current praxis.
What we still need are the Missal chants from ICEL (have you bookmarked this page yet? Do we realize just what a wonderful and progressive gift this is to the liturgical world?) in square-note notation. With the many engravers out there working today, one might think that this would have emerged already but I've yet to see it.