The one thing I don't understand is I think Beal is fantastic, but he has never won anything and has not gone far in the postseason. This is different than getting KG, who carried a weak T-Wolves team to the western conference finals. Is Beal the type of guy that can take us over the top and for whom we should trade away all our assets (other than Brown and Tatum) to acquire?
Beal isn't a franchise player. He is a very good #2 secondary star type player. That is why how good Boston is is almost entirely contingent on Tatum (that is whether Beal is here or not). Tatum has a real chance to be a franchise player, if he gets to that level then Boston would have a real shot at competing for championships if the supporting cast is good enough(I think Brown and Beal would be good enough). So that is why you would do the trade, but Tatum has to become THE GUY.
I am mostly on the same page with Beal = more of a #2 than a #1 as a franchise guy.
That said, I can see Beal as the
#1 offensive player (as opposed to #1 overall player) on a Championship winning team. On a team that either has a #1 best overall player that is more of a game changer in other ways (say a young Dwight Howard). Or on a team with a lot of balance like those rarer 2014 Spurs, 2004 Pistons type squads.
I could see Boston building a team with a lot of balance like that second group and winning a title with Tatum, Jaylen and Beal without Tatum reaching that superstardom stratosphere. It would leave them with a fair bit of work still to do after putting those three together. They would need to rebalance the team. Get more big man help. Proper depth. It is doable.
I would push for that path and be happy to take that risk.
Tatum making that leap would of course still be a possibility that would make things easier but I would be happy to go to war with those 3 even without Tatum making that leap.