Fasching is not a really strong skater to begin with, he's more of a power forward/along the boards and behind the net puck possession player with decent finishing ability imo, and he was hampered by a groin injury most of the 16-17 season, so his development sort of hit a brick wall then. He had a strong finish to the regular season with the Amerks this most recent season, I believe.
I was really rooting for Fasching... he has an amazing story posted above that's worth reading. I really wanted him to succeed. Arizona has a nice young nucleus they are building, so I hope Fasching can carve out a full-time NHL role there eventually.