While I don't think the league will allow it (and would specifically punish the team if the player protested it), I don't think the league would say too much if the player even came close to meeting the requirements and was legitimately hurt, and more importantly was okay with going onto LTIR.
However if it looks like the team is pulling a fast one and abusing LTIR (aka the player is seen being really active or something when he's suppose to be at home with a bad back (or whatever)), I could see someone complaining about it, and the league looking into it.
But again, there's other options if the player isn't hurt to the point where LTIR is available.
For me, as a Canucks fan, I believe in a sense of fairness. Canucks will be hit with a penalty from Lu's contract of about $2.8 million per year should he not play the final 3 years of his deal. I believe this is fair.
Why, because his real cap hit, if you calculate it based on what he was paid and how long he actually played for, should be $6.71 million, but his cap hit was $5.33 million. So, what did that $1.4 million in yearly cap savings benefit the canucks?
Same with the blackhawks. If hossa and Keith leave term in their deals, that could be like $4 millon plus a year over the past several years that the hawks benefitted. How many key role players would that have cost them from their cup win in rosters?
Minnesota too. They save over $3 million a season on cap space from parise and Suter, should both call it a career with 3 years left. Real cap hit would be like $9.4 million vs the $7.7 that they are currently eating. What does that buy the wild each season?
So for teams like these, the benefit has been huge.
Teams like NYR, TB, Philly got out of their back diving deals by exercising the compliance buyout. They paid a lot of cash and got no value in play for it. But they gai Ed future cap space.
Other teams could have done the same and opted not too becuase their players were performing better.
Realistically, a guy like weber likely walks away after another 6 or 7 years. He is due $48 million over the next 6. At that point his career earnerings would be $104 million from the current deal, his $7.5 mill from his arbitration deal, $13.5 million from his second contract and his ELC deal if say $2 million. That's well over $125 million. So, he can decide the if it's worth it to continue to play for the remainder.
Hossa would be up to $90 million and LU would be close to $100 million by the time their deals drop in career earnings.