Good post.
Bold part is the bit I think should be the priority.
Regardless of how the rest of the rotation is built, we ideally want a volume shooter with size at the other forward position.
Someone who's at least a neutral defender, can average 7 to 8 rebounds per game and can shoot lights out.
Doesn't need to do much else. Just rebound, shoot whenever he gets the ball and cut.
I've said many times that we shouldn't deal with Ainge and his ridiculous demands, but Markkanen would be so good next to Wemby.
His role is basically 7ft Klay.
There's also MPJ. He's obviously a tier below Markkanen, but he'd be fairly easy to get if Denver decides to get rid of him due to their salary issues.
Ideal scenario would be Castle developing his skillset like DJ did, Devin taking the next step as a playmaker and then two lights out volume shooters that never stop moving.
While if we get Dillingham a lot of resources go into hiding him on defense.