It'd be nice if he had some kind of thing he was good at. He keeps getting into melee fights, so are we supposed to assume he is good at that? He lost both fights in the first film, and only wins the one in the second film because his enemy is distracted and the movie literally wants her to die. He wasn't supposed to be able to pilot a ship (e. that's why he frees Poe in TFA) yet in the second he's flying whatever he needs to fly.
Really the only thing he is good for is his experience mopping the floors of both Starkiller Base and the Supremacy, and that's just sad.