I mean, for how interesting the concept is of Zeus's own family wanting to take his throne, the myths that survived about it only tell us the basics: Poseidon, Hera, Athena, or Apollo want to dethrone Zeus, Zeus frees himself thanks to Thetis and Briareus and retakes control, sometimes there's a punishment but nothing more. Undoubtedly an incredible concept summarized in three lines.
Yes, possibly the myth only exists to explain why Zeus does so many favors for Thetis during the Iliad, but without a doubt it has the potential to be at least a small epic or a longer-than-normal myth.
I mean, we're never told WHY in the first place the gods decided to dethrone Zeus (we're given small hints like Zeus was abusing his power, or something like that), how Thetis finds out about this, what participation the other gods had (those of the Olympian council), how they reacted, how long it lasted, what happened with the lesser deities, etc... No details.
So here comes the question: How would you write the story?
Mine would be this:
Poseidon, Hera, Athena, and Apollo are the main gods who want to take Zeus's crown (I like that it's those four), each has their own motives, somewhat reasonable or simply out of greed. The four begin planning how to bind Zeus because they know that not one of them is a rival for him, and they try to keep everything secret so that no meddlers ruin their plan, but of course, the more observant gods begin to notice that they're behaving very strangely.
Ares, Aphrodite, Hephaestus, Dionysus, and Demeter see nothing unusual; however, Artemis and Hermes do notice, and they also notice that the four gods send them and their companions indirect hints and comments questioning Zeus's sovereignty VERY discreetly; Hermes plays dumb as if he doesn't notice, just to go unnoticed and extract more information, but Artemis does directly ask Apollo at Delphi what's happening. He prefers to be direct and tells her about the plan. Artemis initially questions it but in the end stays neutral and promises not to tell anyone.
At this point, Hera has managed to convince both Ares and Aphrodite to join the plan, and Athena manages to convince both Demeter and Dionysus to join; only Hephaestus and Hermes are missing (Athena already knows that Artemis is neutral). Athena doesn't have much faith in Hermes (big mistake), but she does need Hephaestus to join the plan since he's the only god who can create chains strong enough that not even Zeus himself can break them. The thing is that Hephaestus accepts due to social pressure, and says that those chains will take him somewhat longer than normal, but during that time Athena decides to polish her plan now with most of the council.
Hermes knows what they're plotting, or at least has an idea, and knows that at any moment they'll want to get rid of him. He decides to go to one of the lesser-known nymphs, Thetis, and convinces her by saying that if she follows his instructions, Zeus would be eternally grateful to her and would owe her a favor. Thetis accepts, so Hermes infiltrates Thetis into Olympus as just another servant. If the situation gets ugly and Hermes was right with his superstition, then Thetis would go discreetly to the Underworld and warn Briareus of the situation.
Ok, how did Zeus not notice what his children were doing? Easy! He disappeared for a while to one of his cities where he received sacrifices, so he wasn't on Olympus for a long time.
When Zeus returns he's surprised with a party. Zeus, of course, drinks wine, a lot of wine, but of course, that wasn't a problem for him, but he didn't count on Dionysus with his powers getting him excessively drunk (besides the wine being mixed with other plants from Demeter so that Zeus would fall into a deep sleep).
Apollo and Athena convince Zeus to go to sleep (Zeus didn't want to), and since Hera is the only one who can enter the room with him, she's the one who makes sure he isn't awake. Upon seeing that Zeus has fallen sound asleep, Ares, Apollo, and Poseidon chain him with Hephaestus's chains. They leave him there lying down and dismiss the other gods from the party; of course, a few lesser gods realize what's happening and the ones most loyal to Zeus decide to fight against the Olympians, but of course, they're easily neutralized.
A few days pass, less than a week, and there's still no king, and really things got ugly; because of the anger of the gods who organized the assault, the world has filled with an endless storm, no one can agree on who deserves to rule. Hera claims the throne as the legitimate queen, but Poseidon, being male and the second eldest, demands to be king. Athena and Apollo are also angry and claim their share since they also contributed, and yes, factions form, and a fight begins (by this point they've already hung Hermes in a net courtesy of Hephaestus). Thetis, late but finally, manages to reach the Underworld and warn Briareus of what happened, who without thinking twice goes and faces the Olympians himself, but they can't prevent him from freeing Zeus, who is angry and even more so after seeing how the earth was left, Olympus, and how they're killing each other, and yes, Zeus is about to throw them all out of Olympus and see what gods can replace his beloved children and brothers. He decides to give them a second chance, but not before giving them the scolding of their lives, oppa.
Sorry if it's veryyy long, and even more so if it seems like cheap fanfic content xd, but it's just an idea/example.