"They want a short Breviary."
LOL...that's a redundancy in terms.
Rome is so concerned about ecumenism and reunification with the Orthodox, but the Novus Ordo is seen by the Orthodox as Rome's rejection of the shared pre-schism liturgical traditions.
I think the Orthodox would feel much better about reuniting with a Vatican that suppressed the Novus Ordo in favor of its liturgical patrimony than what it has now. The Orthodox are the Roman Catholic liturgical Traditionalist's best friends ecumenically.
I have yet to meet one Orthodox layperson or cleric who has anything nice to say about the Novus Ordo.