He was good at overarching plots which is why the prequels are solid in that regard, they got planned in advance. He falters when it comes to smaller plot moments that drive the characters and the audience to follow the overarching plot, the stunted dialog etc.
George Lucas is a genius merchandiser and fun-maker, and things like “cohesion” and “plot” are left for everyone else to figure out.
He was good at overarching plots which is why the prequels are solid in that regard, they got planned in advance. He falters when it comes to smaller plot moments that drive the characters and the audience to follow the overarching plot, the stunted dialog etc.