I'd love them together. We really need a true secondary ball handler in that starting lineup. I've seen a few people in basketball talks suggest Jrue Holiday next year. He and DLo could work together well on both ends. I though Clarkson could be that player but his playmaking ability has regressed but then again that could be a product of playing with Kobe all year and then Lou all this year.
Fultz doesn't strike me as a playmaker D'Angelo was in college (though I didn't see D'Angelo doing much of a playmaking stuff in NBA either) but he is a better scorer than D'Angelo. He seeks contact, and is not afraid to attack the guy under the basket. He has that quality to him that Wade, Westbrook, Rose had. The fact that he can already shoot the long ball is a bonus. He has a higher upside than Russell IMO.