Hirose should be argument A-Z for the spots in the NHL being there for the taking if you're a young player and that they shouldn't be granted because someone looks okay in a role.
You have to bring something that makes the team NEED you. If you're a fourth liner and you are un-noticeable... that means you played well, but it's also not a strong argument for keeping you up or giving you more of a shot.
I listened to Sean Avery's interview on the Spittin Chiclets podcast and he basically said the same thing in his first training camp with the Wings. He went and he turned stuff upside down. He pestered people, made his mark, and made the team. The incredibly ****ing stacked team.
If a guy like Turgeon or Holmstrom or Callahan don't get a shot, it is because they don't flash any skill/truculence/insert aspect of your choice that the team doesn't already have... or they have some glaring flaw compared to the other option. They aren't actively being held down or anything nefarious.
I had something when I worked at a Ford assembly plant that I created a process that made our reporting of data so much better. I got sent on a trip to other plants to help them install and learn it. I had the benefit of travelling and all that because I showed something above and beyond. All of my co-workers didn't get to go on trips around, because they did a fine job and they went home. I did a fine job AND showed that I had something unique that was helped. Doing a fine job isn't enough to earn a promotion.
Doing a fine job after promotion isn't enough to maintain said promotion in sports. For this one, see the movie Rudy. Rudy makes the Irish practice squad because he's all heart and gives 100% every single practice and demands it of the guys he goes against to give 100%. The coaches in the movie even say "if you so much as slow down on one rep, you'll be gone". You make and you earn your way in life and in sports. Somewhere in locking guys up for long term and trying to fit salary cap numbers and all like that, we forget this.