I have been watching the Bruins and hockey in general over 40 years. Rakell plays at both ends of the ice, Garland is more the typical small offensive player, not saying I would not take him at the right price, but I would take Rakell, Reinhart or Forsberg over him any day. I watched Garland a lot here in junior and yes I know players can/ will develop as they mature, but for me he is not bad, but not a playoff type guy and others like Rakell would be adding more than just some offense.
Then it is I who hasn't been watching enough non-Bruins hockey
I watch a good amount of Coyotes, as they're one of my favorite non-Bruins teams with a lot of my family being in AZ, and am a big fan of Garland. He's the kind of pure offensive player that this team needs if they want to fix their scoring. From what I've seen, he's been a hard worker and responsible defensively, too, and I think he could potentially be the easiest to obtain, assuming Arizona isn't going to want to pay him at seasons end.
I think Reinhart is most people's #1 option, but I don't know how realistically attainable he would be. IMO, he could be a Nathan Horton-level add. Consistent scorer on a bad team waiting to be unleashed on a contender. Price would be astronomical though.
Forsberg doesn't feel realistic because Nashville is still in the playoff hunt. I don't think they truly view themselves as needing to rebuild.
You do a good sell job for Rakell. I've never thought of him as much more than a scoring threat, but you seem convinced he's more well rounded. I can't say he's jumped out to me in any of the Ducks games I've seen this year, but maybe I haven't watched enough. Maybe Murray would give us a discount since the Kase deal ended so poorly for us!