the Pope enjoys, by divine institution, supreme, full, immediate, and universal power in the care of souls.” This is kind of a big deal for the Orthodox.
For the sake of this fun what if?
Let’s say Pope X still has supreme, full, immediate, and universal power in the care of souls same as he enjoys right now only under his (Roman) see, let’s say he relinquishes some of his power, in an act of charity to unite the EOC with the RCC.
That is either impossible because it is contradiction (Pope can not infallibly decline his or his predecessor’s infallibility), or we would be dealing with an Anti-Pope. Either uncanonically elected, or someone who lost Papacy in “virtue” of heresy (excommunicating himself and losing his ecclesiastical office of the Pope).
Well let’s pretend here for a moment, say Pope X isn’t declining or denying papal infallibility, let’s say he affirms papal infallibility, but uses his infallibility to permanently shelve its usage in the case of EOC, while leaving the possibility to declare things Ex Cathedra to the RC (actually leaving the papacy to work much as it does now, just only over the Roman branch of the church), and in his declaration makes clear that he isn’t denying papal infallibility (or anything else), instead only agreeing to permanently not use this power in the case of the eastern churches as an act of charity.
Also let’s pretend that the leaders of the various eastern churches have no objection to this sort of agreement.
By the way, fun part is that Orthodox Patriarchs were invited to Vatican I but declined
Again, just for fun, let’s say all the EO Patriarchs attend, and also the leaders of the OO attend, allowing Pope X to make the same accommodations for the OO, uniting all 3 churches.
Basically Pope would be saying that Orthodox Church is true Church of Christ and Catholic Church has Schismed from it and been in error for 1000 years. So Catholic Church would indeed be False Church.
Again let’s pretend, that Pope X isn’t saying anything of the sort, only making accommodations to the eastern churches in an act of charity.
I’m thinking something to the effect of the RCC operates almost identical to the way it does now, the only caveat would be that the Roman pontiff would only have supreme, full, immediate, and universal power in the care of souls same as he enjoys right now only under his (Roman) see.
The Roman Pontiff would also have the ability to convene ecumenical councils.
And the Roman Pontiff would work as sort of a final court of appeals for any issues that arise between Patriarchs.
Otherwise the EOC’s and the OOC’s would operate much as they do now.
In make believe land let’s pretend that all of this would be agreed upon by each party, and intercommunion of the 3 churches would be achieved.