I think if the “Skywalker Saga” is supposed to be over, whatever the new trilogy is will (or at least should) have nothing to do with it. Frankly, I don’t think they could do with the sequel characters what the sequels did with the original trilogy’s characters. Those movies only exist in the way they do because of the three-and-a-half decade-long cultural phenomenon that the original trilogy was, and since the prequels and sequels didn’t become that, trying to use the same formula for the second batch of sequels would be a wasted effort.
This is why my big dumb post here says I think they should jump hundreds of years into the future. Give us a new galaxy to explore, divorced from any of the antiquated iconography we’ve seen for the last forty years. Give us a villainous force that is more than just “evil military government”, and a hero that is more driven by wanting to be in the plot than the plot happening to them. If you wanna keep the force around, make the conflict more than binary light-side/dark-side. That’s why I like the idea of a corporation commercializing and selling the force itself. Every person who buys (however the hell that is supposed to work, these are broad strokes here) is participating in something pretty obviously corrupt and against the idea of the force, but they’re not necessarily all soldiers in a war against everything that isn’t them like the empire is (at least, not publicly).]
But that’s only if you want to make more weird action-adventure stories. The upside to the sequels being too similar to the OT is that you actually could use a lot of the original ideas for the sequels that Lucas came up with, where the third batch of movies is about building a society from the ashes of a totalitarian dictatorship. With that in mind, you totally could make something more final feeling if you absolutely had to just pick up where Rise of Skywalker left off. The problem is I’m not totally sure how you’d craft that trilogy and keep it about space adventures. The prequels in large part struggled because the commentary on how western capitalist democracies fall into fascist dictatorship is kind of at-odds with a lot of the action and adventure, and I think that a society-rebuilding story would fall into a lot of the same trappings, because if I’m honest, the world presented by Star Wars as a film series is not conducive to complex issues. Maybe someone could do a better job than Lucas (okay, well, obviously this is true), but I think the prequels have some fundamental issues in how they construct their themes in relation to their content, and I think this hypothetical set of sequels would struggle with them too.