What really stands out with Haaland is that he doesn't have a glaring weakness. He can and will improve in terms of his hold up and passing play - that will come from time under Pep and playing with the squad. But he's already stronger than any defender, quicker than anyone else and his movement and finishing is, like you say, elite. He can keep improving and whilst he's a beast in the air he can get better at heading. He could have gone with his head with that Bernardo cross against Liverpool for example.
I'm in awe of his second goal. Not just the run, but to not take a touch. The keeper expects a touch and to then be able to engage or narrow the angle, but it never comes. He just runs into a position to get it on his stronger foot and then half the goal is gaping for him to slide it in.