But what could Noah do that Boskovic shouldn't be able to do at least as well?

MAYBE ball handle on the perimeter? But personnel-wise we really don't need secondary ball-handling coming from a non-traditional position this season. (Not beyond our 6'9 PG/SF, anyways.) Not that Mihailo can't put the ball on the ground in the open court himself. Maybe not quite as well as Noah could, though.

Then again — did Noah ever put the ball on the floor to finish strong at the rim like we've seen a couple times from Bosko? I don't recall it if he did.