As the Skywalker Saga has been completed.
So whats next???
The new starwars movies can be made on the plot holes in Skywalker Saga.
Such as where did the intel & secrets come at final battle in each movie. The story behind secret spies collecting intel & that story gets connected to main timeline.
Or
The secret spies that are working in empire & providing information to Rebel Alliance & to Resistance. Example: General Hux. We would like to see the backstory of how he joined first order & how he secretly worked for resistance.
Or
See the story of the one to switched form good side to bad. Changing sides & starts helping the Imperial Army & First Order.