I have to admit, that's part of the charm of the Greek pantheon for me. The deities were seen as people but moreso in every way - including pettiness, jealousy, and all those aspects. They were people writ large, and that made them extra meddlesome.
Running greco roman gods either version, EGO, EGO,EGO, and anything that questions power or position will get big reactions.
Also dont forget to look deeper. the primal forces of the Universe are things that even Zues is afraid of. the gods and Godesses related to Nyct (night, or darkness) on multiple occasions ran to mommy or grandma to save them from Zues.
decrees from fate are inviolable, Gaia the mother of the earth can be reasoned with bt even Zues cant force his will on her, she nearly destroyed the world over Persephone.
Oceanus encircles the world and is more powerful than Neptune even though he rarely acts
there are many players in the Greek or Roman Pantheons that are more powerful than Zues at least in thier own Domain. Its game of thrones meets Jersey House wives if you are going all in on the myths.
If I were to do something like this, I'd probably do a "based on" rather than straight up 1:1 correspondence. It's really not that hard to set up something very similar to that of Greek Myth and insert Roman aspects.This might be a strange question, but if you were creating a mythic earth setting, how would you use the Greek and Roman gods?
I'm just looking for ideas as I'm trying to decide if I want them to be two distinct rival pantheons (but potentially related, two distinct families descended from the titans) with two rival cultures or just the one pantheon. If one pantheon I'd probably use the Greek names for ease and bring in the unique Roman gods as needed. I'd also have to consider if I'd want both Greek and Roman cultures or just run with a single Greco-Roman culture if I kept a single pantheon.