A Reset would be satisfying for many fans for emotional reasons, but I'm not sure it would fix the financial future of the franchise.
That would all depend on the quality of the products going forward. I'm not privy to all the data, of course, but I wouldn't be surprised if Disney has lost a good share of the audience from how they treated the latest trilogy and the spinoff movies, and getting those people's confidence back will not be an easy task.
The Mandalorian is a good sign. Not without its flaws, for sure, it was nevertheless one of the best SW products we've seen in the new era. And it does seem to suggest that Favreau knows what he's doing; or, at least, knows it more than the other people involved with the previous new installments (like JJ "Star (Trek/Wars) Killer" Abrams).
Is that a real possibility going forward? I can't see why it wouldn't be. Comic books do that all the time. Star Trek basically did it, after the new movies alienated so many fans and are now basically shelved as "so, all this happened somewhere/sometime else"-canon.
What seems certain, though, is that Disney needs to think REAL hard about how to take SW forward. They paid a fortune for the franchise; they can't abandon it. SOMETHING will be done.