It absolutely should happen, but it absolutely won't. Not officially at any rate. However, as deepfake and CGI technologies advance and become more commonplace and convincing in home video editing suites, then in addition to an unfathomable amount of fake celebrity porn being spanked out in schoolboy bedrooms the world over, you can all but guarantee groups of dedicated Star Wars fans will take it upon themselves to make their own replacement sequel trilogies that actually respect the story, characters and canon established in the first 6 films, and ignore the inept abortions that Disney shat onto the screen in episodes XII to IX.
The only way I can see official alternatives to the sequel trilogy being made by Disney is in the form of an alternate universe 'what if...?' type story in comic book form. This is because similar alternate reality stories have already appeared before in multiple franchises, including Star Wars itself since all the Expanded Universe stories, novels, comics and video games set after 'Return of the Jedi', from 'Heir to the Empire' onward were callously and stupidly wiped from the canon in a single incompetent stroke by Disney when they bought Lucasfilm (and then that talentless hack Kennedy has the ****ing gall to claim there was no source material to base the sequels on!), and therefore are now officially regarded as 'Legends', aka alternate history. So I can see that happening eventually, but certainly not on film. What we will get instead is a brand new raft of films with some stories probably set within the existing timeline (like 'The Mandalorian'), and probably another trilogy of films set some time after 'The Rise of Skywalker' when a new Sith threat rises.