I think Stevens has a lot in common with Belichick (and they have become friends). He builds teams in part based on having interchangeable parts and guys who can fill multiple roles. He also prepares and adapts as well as anyone, and those multi-dimensional players are critical to his ability to adjust.
The Patriots are the same. The C's got Horford, because they can take advantage of all he does, in so many facets of the game. They drafted Brown because his IQ is very high and so was his athleticism. PF at Cal and they made him a SG...sort of. But one who can defend multiple positions. Smart, another guy who defies categorization. Nominally, he's a PG, yet we know he'll be guarding Lebron quite a bit. Tatum has shown some great ball skills for a guy his size. I was not at all surprised when they drafted Semi, because he's exactly their kind of player. In two years, I wouldn't be surprised if the grab Dedrick Lawson.
They won't get Ayton, but they'd love to have him. Depending on where they pick, they could grab Bagley, who has a little Al Horford in his game, or Luka Doncic a giant PG or Jaren Jackson, 6'11" guy who can step outside. They have two picks this year under most lottery scenarios. Priority 1 is a replacement for the aging Horford.