Making more movies after Episode 9 would only be milking the tit dry. They seem to be on track to give Luke's story a fitting conclusion. They should let it end with that.
And besides, there is 25,000 years of Star Wars history to play with. They haven't tapped into that yet. A trilogy set thousands of years before or after the Empire? That could be fun.
Anything would be better than what Lucas did with the concept.
It made sense that ObiWan would dress like an Arab on a desert planet. By why the Sam Hill are the Jedi dressing like goat-herding hermits when they are back on a civilized planet?