Why would the Pope care about Orthodox heresies?
Iconoclasm is more than an orthodox heresy. It was condemned by the entire church in ecumenical councils, which included Rome before the schism. (Iconoclasm was condemned in the Seventh Ecumenical Council, 797 AD)
It is the same for actually almost all of the Orthodox heresies in the game. They were condemned in ecumenical councils before the great schism so they are the heresies of both Orthodox and Catholic. So, why would the Pope NOT care about these old heresies? Especially Iconoclasts in his own jurisdiction?
Here is a list of "Orthodox" heresies and the date they were condemned.
Nestorianism, condemned in Third Ecumenical Council, AD 431
Monophysitism, condemned in Fourth Ecumenical Council, AD 451 ("Miaphysites" are also condemned, as they do not accept the Chalcedonian creed laid out in the Fourth Ecumenical Council)
Monothelitism, condemned in the Sixth Ecumenical Council, AD 680-681
Iconoclasm, condemned in the Seventh Ecumenical Council, AD 787
Great Schism: AD 1054
Please realize that all the heresies listed above were condemned by the entire church, BEFORE THE SPLIT TO ROMAN CATHOLIC AND EASTERN ORTHODOX! The Bishop of Rome condemned all of these heresies. They are not only Orthodox heresies, they are Catholic heresies. The only reason that they are listed as Orthodox heresies is because they originated in the east and did not spread to the west, just to simulate that if these heresies took root, it is more likely it would be in the east as there was a history of it.
If any of these heresies were in the west, they would be looked on exactly like they did in the east, as heresies. Again, because the Bishop of Rome also condemned these heresies even before the great schism, and they still do condemn them.
So, it is unrealistic for the Pope to not care that much about an iconoclast Ireland. it should be treated the same way it is in the east, as it is how it would be in reality.
(I mean, Orthodox get holy war CB on Iconoclasts, and Iconoclasts holy war on Orthodox, it should also be like that for Catholics and Iconoclasts, as they are just as much of a heresy for them as well)