As where we stand today, looking at the diffrences, especially the dogmas that were added after the Schism, One cannot refrain from saying that it is not realistic, However, One should not loose faith, hope, and love nor cease praying for this reunion not only with the RCC but also with all, For, what is at GOD's is not at man.
To be perfectly accurate, there were no dogmas added
after the schism. Dogmas cannot, by definition, be added, but can only be clarified through the deposit of faith. Without re-hashing the whole filoque
dilemma, the only thing I can think of is the Assumption of Our Holy Mother, which is stated to mean after her earthly death by our Eastern brothers and is left open, (before or after death), in the West. Purgatory in the West is fully compatible within Theosis
in the East and is the preferred definition of all the Eastern Rite Catholics who remain with Rome. Maybe you can point out some others I may be missing.
Now as an Orthodox Christian went to attend the Mass, How can I accept your communion if your preist held the precious BLOOD and minister only the Wafer?
Two points. 1. I can tell it has been awhile since you have been in a Catholic Church. Holy Eucharist is almost always offered to the faithful under both forms and has been for many years now. Only in very large churches or if Mass is offered under the extraordinary
form, (the old Latin Mass), is it only offered under the species of the consecrated bread alone. This was begun as a practice
only, not doctrine, in order to fight the Protestant heresy that the "Lords Supper" was symbolic only and was not actually the Real Presence of Our Lord. 2. The Eastern Orthodox dogma is the same as the Catholic one in regards to Holy Eucharist. Even the slightest particle of consecrated bread or a single drop of consecrated wine is
the full Body, Blood, Soul, and Divinity or Our Lord, Jesus Christ. It is custom to always receive the Eucharist under both forms in the Eastern Orthodox Churches, but the actual doctrine is identical for both Catholic and Orthodox. Both Churches completely accept the validity of each other's Holy Orders, Apostolic Succession and the validity of all sacraments performed by both Orthodox and Catholic clergy. It is sadly, not the same with our Protestant bros.
I would also point out that in terms of differences, the Eastern Rite Catholics share virtually identical perspectives and practice on almost
all matters of the faith and are still united with Rome. We miss our Eastern Othodox brothers terribly and pray constantly for our reunion. As HH John Paul II said of our Orthodox brethren, "We must have both our lungs, East and West, working together to breath properly."