Yup - I see direct lawsuits, for instance, if the PA manages to get Hartman's suspension reduced and then another player gets a brain injury from him, etc.Really ought to start bringing in some older players with CTE to show the young guys what they're really fighting for. As a teenager or 20-something you think you're indestructible and that thought process is normal. Extremely shortsighted, but normal. Let them see their what their future is going to be after a few too many knocks to the head.
I also don't think the NHLPA will win a lawsuit if they ever bring one forward. Lawyers and judges being what they are, never say never, but I would think all you'd need to do is bring forth evidence of the NHLPA condoning these actions repeatedly through appeals to say 'nah, you guys have condoned the violence by supporting the offenders, you reap what you sow'.
Bring it on. These groups should be protecting players.