I don't know where to rank Zion. ESPN has him at #23, just behind Bam Adebayo at #21, just for reference. I know these rankings are just opinions but they are a guide to perceived value. I would rank Zion as a better prospect than Bam for sure but I am not sure exactly where to put him.
Luka seems to be the gold standard for young stars. I have Tatum in the same range as Luka but I am not sure about Zion (yet). With his size and potential, and only 21 years, he could end up absolutely at the top of the league but he is not there yet. I don't see NOP trading him anytime soon but if they did make him available, Brown would definitely be on the table and maybe Tatum (definitely not both). I am not so sure where the Celtics end up though if they were to trade Tatum for Zion. Seems like a lateral with a lot of risk. And it would make zero sense for NOP.
Maybe a deal with Towns and Zion involved? Something like that? Two teams both looking for fresh starts?