Surely you are aware that the Orthodox church has a "one bishop, one city" rule that has been in place for centuries.
Do you think that this rule:
a) is only to prevent peer competition between bishops in a single city;
b) suggests that the flock in a single city has only a single (earthly) shepherd;
c) is irrelevant today; or
d) something else (please explain).
(You can pick more than one, if you like.)
If you agree with (b), doesn't that suggest that - for example - the Patriarch of Moscow does not have spiritual authority (or spiritual responsibility) for any Orthodox person outside the city of Moscow, although he may have some administrative authority. I've heard Orthodox folks who would say so.
If that is so, then is that also true of the "Ecumenical Patriarch" (namely that he has no spiritual authority outside of Constantinople) and the "pope" (namely that he has no spiritual authority outside of Rome).
Finally, given that other cities than Constinople and Rome have become dominant in the new order of things, shouldn't those other city's metropolitans/patriarchs be accorded greater administrative authority.