For anyone concerned about paying Lauri... he's going to sign a max deal next year, he's a max-level player in this NBA. If you don't want him because you don't think he's good enough, then that's fine. But if you want him, you're going to have to pay the max, because that's what he is. This is going to be true of any "second star". We have to get used to this idea and not be afraid of a massive deal.
IMO, Lauri is definitely worth the max he'll command and is THE perfect fit based on on-the-court fit AND availability. There might be other max players who you think would be better to add, but are any of them actually able to be acquired? Luka, SGA, Giannis, Maxey, Halli, etc, etc, etc. are NOT getting traded. Lauri, on the other hand, you can get. Trae Young is the other most-available player, and we all generally agree we don't want him.