This is actually a good idea. When neither traditional party wins a majority in the house or senate, this new party could do the power broking like Munchkin does now.

I would love to believe this is happening.

I hope dearly that this is happening.

But the number of Republican officeholders and hopefuls streaming to Mar-a-Lago, hats in hand, ready, in fact desperate, to bend their knees and kiss the ring, seems to tell a different story.

The persistence of some 70% of Republicans, including the leadership, in endorsing the lie that Trump had an election stolen from him seems to tell a different story. The silent acquiescence of the rest tell an even bigger story.

The continued belief of millions of rank & file Republicans, as well as independents, that Trump was somehow the greatest President in history seems to tell a different story.

Part of the story is cognitive dissonance. People who are committed to being a Republican voted for Trump and then doubled down when the facts, objectively viewed, showed that he was by far the most corrupt and simultaneously the least effective president ever.

Part of the story is lust for power. Republican politicians fear that without Trump's blessing, they can't win, while any who incur the wrath of Trump are politically doomed. This goes to the extent that anyone who even publicly disagrees with Trump's election lies is endangered. Witness the fate of Liz Cheney (whom I disagree with on almost every issue except for Trump).

The real story is this: The mass of the Republican party, officials and voters, would far rather destroy democracy than live in one where anyone else (read: the Democratic party) is in charge.

So maybe I'm overly cynical, but I'm not holding my breath.

When I was studying US politics (2019), this came up as discussion in class. Why does the USA only have two political drivers?
In basic over simplified terms, it is a reflection of the British system during the 19th century with the Liberal party (Democrats) and Conservatives (Republicans). In the UK, a new power the Labour party, knocked the Liberals off their position with their socialist workers viewpoint. This produced another two-party system with the Liberals hanging onto the coattails of Labour or the Conservatives, but crucially acting as a balancing point in parliament.
The American system is that of winner take all and the support of the false American dream. The USA needs at least a four party system providing balance and compromise whilst giving a voice for moderates and extremes alike. A 'Tea party', party could give extremophiles a place to exist in and allow the Republicans go back to who they were. A Peoples party could represent the workers, dragging America into at least 20th century as far as freedom and human rights are concerned in comparison to Europe, Canada, Japan, South Korea, Australia and New Zealand.
Originally the running of the legislature was based on individual (white rich) Americans representing their constituencies as individuals and voting on each item as it came up with their intelligence and conscience. Not as it is now, along partisan party lines. Once full party politics kicks in, then impeachment of a POTUS is destined to fail, and the whole system stagnates into what it is now.

I wish the end was near but I fear you are overly optimistic. 70 million people voted for Trump. Many of them will tell you they did not vote for Trump but instead they voted against socialism. In other words, the people that veer to the right understand the power of cohesion.

Those people who feel politically homeless seem to also be politically clueless.