Power downturn aside, Ryan McMahon has certainly filled the Yankees' third base void nicely since coming over from the Rockies, turning a blank space in the order (and defensive alignment) into something that must be accounted for. It was a low bar to clear, but he's cleared it nicely (though we're still waiting on that flourish).
You have to give to get, though, and while it can help future trade relations if the pieces you surrender perform up to code in their new organizations, it still stings a bit to see a helium-alert prospect building on their tools even further with a different club.