I'm sure you've seen the last two Pens games and how their PP is in complete disarray (not that it wasn't before). They clearly miss Goligoski's mobility. If you watched the Dallas game the other night, Goligoski showed what he can do. He made a stellar play up ice sending Ott in all alone during the PP. During another PP, he had a pretty solid scoring chance from the left point that resulted in a rebound/chance that wasn't finished. He's giving Dallas options that weren't there before on their blue-line.
In the end I think the Pens made out on top, but not by much. Dallas needed that mobile-D badly, and they dealt from a position of strength. Though Neal will be missed, they do have Benn on the way into a stronger roll with the team
Just some thoughts~
(Being an @$$ here) Goligoski's also scored 1 more goal than Letang has