The reason Hextall tells someone like Sushko to focus on defense and forechecking isn't because he doesn't have potential to be a scoring winger some day, it's that with limited berths on the Flyers the next half decade or longer, his best chance of making the team is to ensure that his floor is a 4th line forward, his ceiling is up to him.
Not to turn this into a Sushko thread, but there is a difference between "focus on defense and forechecking" and Hextall's quote - "He’s not going to be that type of player at the pro level. He could be more of a two-way guy that’s not expected to score, but you hope he can chip in. " (Source:
Hextall's take on Flyers prospects at World Junior Championships)
I have absolutely no problem with any GM saying work on your defense as it gives you a better chance to play in the NHL. I do take issue with saying you're never going to be a first or second line player so don't even think about it. Encourage them to build an all-around game, emphasize their strengths and encourage them to keep working on them, but don't actively discourage part of their game. There's no need to put an artificial ceiling on your prospects.
Hextall's full quote for those who don't want to click through:
"Sushko was good. He’s big player on that team. They don’t have a ton of ability, so he plays a big role, probably a bigger role than he would play with another country, but he was playing 24 to 26 minutes. Too much for a forward, but he’s a big guy, a thick guy that can skate. He’s got good sense. He was on their power play, their penalty kill. He did a lot of good things and played well. He’s not going to be that type of player at the pro level. He could be more of a two-way guy that’s not expected to score, but you hope he can chip in. He did a good job, made a name for himself. Obviously we knew him taking him in the fourth round, but he made a good impression."