Westbrook can also handle the ball, rebound, pass, etc. He is a much better player than Hield and honestly I don't mind the fit with Lebron because Lebron needs someone that can actually do the work during games. Lebron has also never played with someone as content to pass as Westbrook. Irving was obviously a great ball handler, but he hated passing the ball. No other teammate of Lebron's is really considered a plus ball handler and certainly none of them can pass like Westbrook. And yes I'm including Rondo because Rondo was a shell of what he was in Boston on the Lakers. He'd show up every once in a while with a solid 20 minutes, but just couldn't do it at a high level nor night in and night out.
All that said, I do wonder if Hield, KCP, and Schroder would have been the better option. Hard to say because there is really good value in having the better player (like you often get more value from having a guy at 85% as opposed to multiple players in the 75-80 range).