I'm not sure what kinds of western liturgies ROCOR-MP has in their synod, but I know that in my own synod there are some who use the ancient Sarum rite and the Hispanic (Mozarabic) rite. Honestly I think these rites are just as foreign to modern western Christians (like Roman Catholics and Protestants) as much as the Eastern rite is to them. I've been to an Antiochian western rite church back when I was in World Orthodoxy and their liturgy of St. Gregory was very much like a traditional Anglican liturgy with the Protestant hymns and such. But when I went to a Sarum rite liturgy of my synod, it honestly didn't even compare to the Antiochian western rite as it was very Orthodox in its content and there were no traces of Protestantism or RC-ism to be found. It was simply an Orthodox liturgy in the true sense of the word "Orthodox." Also, I have read that in pre-Nikonian Russia, they used to do the Sarum liturgy on the feast day of St. Gregory. Just some food for thought.
This is a great point, and I think it proves my point as well. If these rights are done correctly they are/will be foreign to converts. So, why try to reestablish a tradition that ended essentially for the Orthodox nearly 1,000 years ago? Because we are westerners? I haven't an ounce of eastern heritage in my veins, but I want Orthodoxy more that honoring a past of heresy in my family tree.
In truth, it is not my part to judge such exalted matters within the Church. I do know that St. John of San Francisco actively encouraged Western Rite parishes within the Orthodox Church-- in Europe and in America. Also, if I am not mistaken, the Patriarch, St. Tikhon, blessed a Western Rite liturgy for use in the Orthodox Church.
Who am I to question the judgments of St. John, St. Tikhon, or any hierarchs of the true Church, including the traditional ROCOR? As for this latest action by the MP-ROCOR, I do not consider these hierarchs to be bishops of the true Church.
This is a valid point as well, but let's get something straight about this. These heirarchs are Saints because of their holy lives and unshakable faith, not because every opinion they had was a good one. Just because St. John or St. Tikhon had some involvement in having a western rite doesn't mean that it's a good idea. After all, as Fr. Siluan so adeptly pointed out:
"RESOLVED: The Western rite in its present form was introduced after the apostasy of the West from the Orthodox Church and is not in accord with the liturgical life of the Orthodox Church with which it had been united for the course of many centuries. It does not reflect the Orthodox Church's liturgical tradition. Thus, it does not satisfy converts to Orthodoxy when they familiarize themselves with it to a greater degree, and has nowhere enjoyed success. In consequence of the above, the Council of Bishops does not recognize it as possible to permit the Western Rite in the Russian Church."
– Decision of the Synod of Bishops, 1978. Published in January of 1979
So, apparently in 1978 the synod recognized this as a bad idea for the life of the Church, despite some individual bishops having had a favorable opinion of it in the past. They made this decision in retrospect; seeing that it "has nowhere enjoyed success."
I could see a valid restoration of the Western Rite to the True Church within a couple of generations after the 1054 schism. But by now, so many layers of innovation and interwoven western poison are contained in this idea to me. I used to be an Episcopalian and I loved the high church liturgical traditions there. However, when I realized that it was a false church I left and knew that I needed to make a complete and clean break from all of that and give myself over to Orthodoxy unconditionally. I am not saying that the ancient rites are not valid, just that in the context of the world 1,000 years later with the World Orthodox and the other heretics running headlong into the arms of the Antichrist, I just can't see the use of this set up. It just seems to add complication and confusion to the situation in my humble opinion.