I mean, the Jazz have tried potential upside swings with unathletic players A LOT in this era with Keyonte, Brice, Cody, Collier, and Filipowski. All swinging on upside based on their shot creation.
Ace is the first player since Hendricks to legitimately have good tools that they drafted.
(the fact that all of guys have pretty awful tools other than Ace and Markkanen is probably one reason why we're so bad defensively)
Well, every prospect is an upside play based on their shot creation to some extent. It’s not like all of those players listed are similar. You’re using “upside swing” really loosely here.
The point is that you can’t box a guy into a floor/ceiling and that the traditional youth/length/athleticism measures of potential don’t really tell the whole story. There are some athletic freaks that develop all the skills once they get into the NBA, but that’s not everyone who hits on a high outcome and I don’t think it’s even the most common.