Where does Hayward fit in their rotation? Shai/Giddey/Dort/Williams/Holmgren, right? Theoretically he either takes Giddey's place in the rotation or he comes off the bench. I don't think he replaces Dort, I think they need Dort's defense in the starting lineup.
Wallace/Joe/Hayward is the start of a very nice bench with a good mix of skillsets, though I don't like their options for backup big. I think they're putting an absolute ton of weight on Holmgren.