Young skill player MT has out of position with limited icetime some say because he's not ready -- compare with treatment of MacKinnon. FreeGalchenyuk!
MacKinnon is playing wing as well, while he is actually a natural centreman.
I dunno, even though I think a lot of the blame is on Therrien who I am not sure is the right coach to guide youngsters, MacKinnon came into his draft as a superior prospect to Galchenyuk in his and MacKinnon managed to produce very well this season even with more grinding types (and the ever special Johnny Malkin) on the third line before making his way up. He didn't have to play with Rene Bourque, BUT MacKinnon already seems adept at creating his own offense regularly. Galchenyuk is, as this thread says, a tease, someone who shows flashes of what he can/will do down the line, while MacKinnon already plays like a gamebreaker. Player development is different for different players and skill sets.
But yeah, Roy is definitely a great coach for young players nonetheless, and I hope whoever does take over eventually will be nearly as good, allowing the younger players to show what they got.