A pass-first PG isn’t necessarily the answer. The team just needs better passers. Rob Williams is a really good passer at the center position, for instance. Smart is a great passer and usually plays SG. Hayward was a great passer as a forward, and that’s one reason the team struggled this year.
A lot of this will be solved as Tatum and Brown age and gradually improve in their passing. Otherwise, the team just needs to fill the roster with good passers who know how to play in a team concept.