Now, this is the part I really don't get with "fany stats folks".
Somehow, you seem to have the same expectations for every player in the league. You can try to improve the league as much as you'd like, but you will FOREVER be stuck with half the players below 50 FC%. And on every team half the players will be below average relative to their teammates.
It would make a hell lot more sense to expect every single player to score 100 points in a season. At least there's no mathematic limit to that.
I understand that half the players are below 50%. [well not really, but that's another discussion - I understand the proposition]
I'm not talking about below 50. There's some guys who are below 50 who are solid hockey players. Holden has been really solid for the Rangers and is hovering around 49 if you adjust for teammates. I still think Shea Weber is a very good player despite poor advanced stats. Maybe a tad overrated, but very good. Braydon Coburn is a player who isn't a statistical darling that the "fancy stats guys" tend to really like. Yandle, Vatanen, and Burns are all ****** shot suppressors but I like them all as players.
But it's so much more than above or below 50. That's nothing. That's just a number.
What's really important is the type of player you are. There's a wealth of players in the NHL -the majority of the league, in fact- who are passengers. Good teammates - 53% possession player. Bad teammates - 46% possession player. There's nothing they can do about it. Examples wouldn't be worth much, because name a player and he probably is one. These are fine players who, as you propose, half of whom will have sub-average possession numbers. There's drivers and passengers: that's just how this league works. There's nothing wrong with being a passenger, particularly if you're good at other aspects of the game. Hell, Patrick Kane is complete passenger when it comes to corsi but when you sit shotgun and score 100 points it tend to not be a problem.
The guys I'm taking issue with; everyone on that list, is an anchor. They hurt just about every single teammate they play with. You talk about expectations. Yes , I expect every player in the league to not actively hurt their teammates.
If everyone you play with suddenly becomes a 48% possession player when they're with you, like Bouwmeester, Josi, Staal, Polak; you probably need your role changed.
If everyone you play with suddenly becomes a 42-43% possession player, Dan Girardi, Josh Gorges; you simply don't belong in this league.
I don't have the same expectations for every player and I don't expect every player to be good at corsi. I do expect every player to not be poison.