I think his directive from Kennedy and Disney was to make it "unpredictable" and he went out of his way to make it indeed unpredictable, JJ has a long history of making unpredictable happen, so his plot decisions were often weird, but anchored somewhere in vicinity of believable, whereas Johnson's plot decisions were so far removed from any predictability, so far "the last possible option anyone would come up with" that you can almost hear director screaming "Bazinga!" in the background every time "twist" comes up, which in turn makes it very "carpet toy game". "You thought she was dead, cause she's like - dead - right? Na-a - Poppins Leia fluhing back to the ship, open the doors! BAZINGA!". "All lasers on Luke! Kaboom, kaboom, you thought Luke is dead fo' sure, na-a - it was holo-Luke. BAZINGA!" - that kind of thing.