Yes, Steve Trevor can have some humorous quips and be capable and respectful, and an overall really nice guy. But that's not a very compelling argument for Diana to be stuck with him. He just doesn't really add anything to her stories anymore.
Right now we have a great creative team, and I would argue that the only things dragging them down are Steve Trevor and the Rebirth version of Etta Candy (who has been vivacious in other realities).