One of his books that actually did have great characters and plot was Skyward, the first book in a series of 4 (#4 is not yet released). It focuses heavily on personal relationships with a small cast of characters, and the plot is tightly centred on the main character. But it was like Sanderson threw all that out the window with book #2 (Starsight) and #3 (Cytonic) in favour of world-building and a weird plot that expanded in scope extremely rapidly, and I heavily disliked those books because of it. #1 was a 9/10 for me, but I rate #2 as 3.5/10 and #3 as 5/10. But that's me; my siblings who also read the books all seemed to love them.