Simmonds would have the 5th most goals on the team were he added via trade (16). He's not a 55-60 point player anymore, but that may be the result of being on a shitty team more than anything. He's only 30.
I've always loved him and would love him on the Bruins. You can't win with a team full of Simmonds, but having one or two guys like that on the roster will help you more nights than it hurts you. He's tough, he finishes his checks, and he's a better goal scorer than a lot of the Bruins roster right now.
He's not worth a 1st, or a top prospect. But he'd make the Bruins a much tougher team to play in the playoffs, and helps with their biggest weakness - secondary scoring.