One of the ambulance chasers looking to profit from this (in short: he's the lawyer, not a player) is a former NFL player. He's been spamming Twitter all day with links for his blog.
It is really interesting that
said blog speaks about the new rules post 2005, yet all the suing players were gone a decade or later before that.
So far it looks like they are just throwing a million different things at the wall and hoping something sticks. Not a bad strategy, albeit typically scummy lawyer behaviour.