Clark always controlling Diana's Amazon temperament. While there has not been much romance between them they have a great friendship and their interactions are really sweet
I never read the books but going by TV...
Diana is fierce, brave, and loyal, commands respect and needs no man's leave to do anything, bred to lead. I'd imagine a Lyanna Mormont type. Kal is a Jon Snow/Rob Stark type. Brave, kind, conscientious, thrust into power by fate and destiny and leads by example.
Bruce is imo a necessary support to SMWW. In many stories Clark and Diana are paired romantically, Bruce is all that you describe and their love for him is manifested in asking him to be their first born's godfather as in KC and Distant Fires had them name their son after him. New 52 Bruce was a Kal/Di shipper. And We need a story showing Bruce mentoring SMWW progeny one day.