This has basically been my position for years now. You can build a title winner with the two of them, but 0 defense and a stubborn permissive coach isn’t the way to do it.
I’d say look at the Philly, Phoenix, Milwaukee, etc model, with three all-star-ish to all nba level players. 3 top roughly 30 guys. Surround them with athletes that play defense.
Embiid, harden/Simmons, harris
Paul, Booker, Ayton
Giannis, Middleton, Holiday
You already have two guys. Do what it takes to get the third. Jerami Grant comes to mind.