In my game with the Hungarians (Hard/High/MTWVI) Papacy is getting waaay too big. Now it is extra difficult to counter them because most of the "tools" don't work on them...

They annihilated the Italians, took over Spanish territory when the Spanish king died without a heir, now advancing north to kill the emerged Swiss. HRE is cornered somewhere with two territories and the Papacyg is chipping away England and possibly France.

Basically no Christian power can stand before them because they get excommed and they are doomed then...

You cannot make the Papacy heritage line extict because the new Pope gets elected every time. It is hard to fight them (excom) and you cannot inherit the lands because there are no princesses.

It is true that in GA they can be nice because they kill the others who DO get points but surely my empire is on their killing list...

So what is your expert opinion on handling them...?