Aside from the Papal Dogma, what else?
Well there are two Papal dogmas.
But even if it were only one, that would be too many.
I see the concept of universal jursidiction to be in conflict with early church thinking, but that wouldn’t be so bad if it wasn’t a dogma. As an opinion about a church discipline I’d say it is not at all dangerous. If all the synods of western Europe wanted to voluntarily place themselves under a common patriarch for practical reasons, I’d say that is their prerogative (in that case the bishop of Rome would likely have the best credentials for the job). For them to declare that all other synods must do likewise
whether they want to or not is religious politics which can be negotiated, but not necessarily a heresy. But to further declare
God intends for it to be that way and we must all believe it or be anathema (as happened in 1870) is from an Orthodox perspective either an honest mistake or a deliberate fabrication.
For an example (bear with me), some people might think that the Secretary General of the United Nations should be the emperor of the world. That some people think such a thing is their right. Each would have his own reasons (some might even think God wants it that way).
It’s ok if people think the United Nations should be a worldwide empire run from New York, those people have a right to their opinion as long as each and every other person has an equal right to their own opinion. It’s even ok if most people around the world think so, then they can mutually decide to make it happen! But to claim that God wants it that way is actually to proclaim a dogma which cannot be shown to be an Apostolic teaching, and that is where a charge of heresy can come from.
Returning the idea of Papal universal jurisdiction to a theological opinion, and removing the claim of dogma for it would free up the RC church to compromise on it. Right now it simply cannot compromise, it is non-negotiable.