Might be repeating myself but Sengun seems like an 8 man rotation deep playoffs player to me.
Because he can get in the game off the bench and with his craft and skill will generate points. So few players now can get theirs in the playoffs. Anyone watching the series can see. Brook Lopez unable to punish the Nets, Landry Shamet able to stay on the court and not get posted and scored on. The Hawks able to play Young and Lou Williams at the same time. The Jazz completely unable to punish the small clippers. The Sun's unable to do the same without Ayton on the court.
Sengun will be able to walk smalls down and score. If he's doubled and people cut he'll find them. That's valuable. He reminds me a little of the 2014 Diaw but with more intent to score and less nimble feet on defense. He should be able to have a role on real contender, maybe it's only off the bench, but I think it will be real.
With the switching defenses and refs letting so much go on the clutching and grabbing and bumping, so many players can't score on their own and they can't get advantages to play their team game, so it's 3 point shooting and iso. Sengun should be able to thrive in that environment with his craft, touch and strength.
I think that has a place on the Spurs if they ever make the playoffs again.