If you assume that Cade, Ausar, and Holland are your core and the main guys you’re building around, what do you need to add? Size and shooting.
PJ Washington, Domantas Sabonis, and Isaiah Stewart could form a formidable and switchable trio to rotate at the 4 and 5 in the playoffs. Detroit could rotate and go small ball lineups with PJ at the 5 but then go really big with Stew and Sabonis holding it down.
Devin Carter becomes your backup PG with LeVert and Robinson as your backup wings. All this team needs is another sharp shooter (maybe a reinstated Malik Beasley) and they are set to make some noise.