This is a logical move, but I’m afraid the lack of quality and viewership in Ahsoka, Obi-Wan and Manda S3 (not to mention the films) has caused a lot of disinterest from the general moviegoing public and will cause the film to flop.
They would need a story, a budget and a reason to go watch it way beyond “Manda and Grogu will have some fun together”. As disheartening as it is to say, I think they need to bring Mark Hamill into this as a deepfaked, younger Luke. Tie Fighters, X-Wings and a random new jedi won’t engage anyone these days. It’s already been done, and it lost it’s return value after the Sequel Trilogy. Luke needs to be central to the plot and whatever mission Manda and Grogu will embark on.
They will need for the film to be of major importance to whatever future plans they have so that people feel invested from the trailer alone with Mark Hamill’s Luke carrying the film alongside Mandalorian - almost as an apology for the disservice they did him in the Sequel Trilogy, and hire 3-4 high quality writers with literally zero flops among them.
If this film is a success they will have the opportunity to drop the entire Sequel Trilogy universe if the Rey movie fails (and it srsly might do) and fall back on the rather empty void between ROTJ and TFA. If both of these films fail, and therefore both timelines, Disney Star Wars in cinema format is rather dead.
If they pull this off with emotional waves, a captivating story and a tease for what is to come; then it can be the spark to ignite the fire. But for that to happen they will need to get people back in the cinema seat, and for that, they will need Luke imo.
This might be the pathway to restore good faith and trust with the audience, and make the Sequel Trilogy more watchable and respected in the future when we got to see a Luke, Han and Leia at the height of their abilities throughout these “Prequel films”, before their inevitable deaths. “This will begin to make things right”.
If you ask me, this is their one and only shot. I might be totally wrong. I might be totally right. But this is the one, last chance for them to restore the trust and the fire to care about Disney Star Wars on the big screen again - the way I see it.