The issue isn't that the director is brown, it's that they hired a political activist director who has only directed feminist documentaries and has no right to be in this position. They are obviously more interested in the virtue points (The Force is Female! And diverse!) and pushing their agenda than telling a good story with good acting.
Hell, even the new disney Star Wars Canon novels which I read -- I almost got lost in a chapter because they adopted the "they/them" pronoun quackery to a character in the book. Like trans non-binary inclusion is so important that you need to shove it into a universe that there never was a plural character in its entire history. Now I'm here reading a piece of literature with someone writing "they ate some food" "he passed the blaster to them."
As far as the whole well has ran dry hypothesis, I have to disagree. There are tons of really cool timelines and storylines in the universe that could be fleshed out into movies. The Old Republic Era, the Dawn of the Jedi, Crimson Empire with Kir Kanos, the Yuuhzon Vong, Darth Bane, Plagueis, or any of the ancient Sith.
Andor and one or two seasons of the Mandalorian have proven its possible to not make complete and absolute utterly shiite.