So pointless to try and determine which guy is the PG or primary ball handler. To be good you need at least two guys capable of it and it appears Detroit might have the beginnings of that. Encourage that and don't try an pigeonhole the young guys. They each have different strengths so play to them.
Most defenses can not guard or take away multiple perimeter guys. Take Orlando the other night. Suggs is their defensive stopper outside and they chose to leave him on Cade when Cade/Suggs were on the court together. Let Ivey eat if they are going to defend him with Fultz and not double. They switch up the defensive coverage then switch up who is getting the plays called for them and go back to Cade.
As much as I hate Zeke as a person, he was great at this. If Joe was going off, Zeke got out of the way and let Joe do his thing. Every game they would come down and go to Edwards in the post to start the game. If he hit that first shot, guess who got the ball on possession #2? Zeke found what worked and would pound the other team with it until they proved they could stop it. It changes from game to game and even quarter to quarter sometimes.
Don't stick the ball in one guys hands and tell him to go be the lead dog. Embrace the fact you have two guys capable of it and then find a way to utilize it.