Galchenyuk has been terrible the last two years, but so has Domi. Both guys haven't driven possession, or produced. Galch at least has shown the ability to create shots for himself and score on the PP. To me Galch's problem has been more mental than physical. He was always treading water in that market. I think his ceiling is higher. With some good coaching I think he can be a 2nd/3rd line center.
I love Domi's skillset, but if I am someone who care about what the Habs did this would be concerning. Because their active goal is to find a #1 center, they traded two pretty good assets to do it, and ended up targeting Domi and Drouin. Its more of the same from the Habs. A move that on its own you can wrap your head around value wise, but what exactly are you achieving? Doesn't make them better now. Doesn't fill any holes. Doesn't make them younger. It adds character and toughness though.
Although I do like the one-for-one hockey trades, and wish there were more of them so what do I know.