When you see what star players are getting traded for nowadays, and you add in the fact that players are starting to dictate if they want out, I think Beal could be had in the offseason for a package that doesn't include Brown and Tatum. Of course, it'd require a lot of everything else, including likely 2 of Smart/Timelord/Fournier. But it's something I'd do.
A Tatum/Brown/Beal core with hopefully 1 of Smart/Fournier/Timelord I think could do really well, and possibly Kemba too if he isn't traded away at least for 2022 before his contract runs out.
Of course, we need Beal to actually say he wants out, and a little bit of extra recruitment from Tatum.
But really, Harden went for AB, Olynyk, and picks. James Freakin' Harden. Not saying it'd be that cheap to acquire Beal, but in all seriousness how many recent "superstar trades" have needed a lot? Anthony Davis is one. Maybe Paul George though his acquisition also got the Clips Kawhi.