Victor Wembanyama is the Spurs' superstar. That much has been obvious since the first time he took the court in San Antonio. He's immediately good enough to be tank-proof. But the biggest reason this rebuild looks so promising (and sustainable) is that the Spurs are not operating in a system of Wemby-plus-some other guys.
The roster around him already feels intentional, and it manifested in the Spurs' NBA Cup semis win over the Thunder; Wemby was one of four guys who scored 20-plus points for the team, along with Devin Vassell, Stephon Castle, and Devin Vassell.