What problem are you solving here?
Oh, but he'll be on IR instead of LTIR. OK, he still can't play until he's cleared, and the NHLPA isn't letting him get forced off IR and into a game under whatever bullshit pretenses. What problem is getting fixed here?
Oh, but now the team won't be able to use the guy's salary to ... so, in Game 77 a team can be completely cap-compliant with LTIR and play whatever 18+2 for the night, then for Game 78 guys on LTIR get forced off and the team has to make various roster moves to get cap compliant - including potentially moves that may deprive them of the playing services of guys in the playoffs. It's the same thing as I point out re: Game 82, cap-compliant vs. Game 1, now not-cap-compliant: you really think teams are going to be OK with that?
You're still searching for a problem to fit your solution. The solution to this oft-alleged problem is really, really simple: enforcement of existing medical protocols re: players on LTIR and the determination of when the player is or isn't able to play, not a 1-sledgehammer idea that likely screws teams who've done nothing wrong, or a 139-page treatise trying to cover every possible situation that might arise, or anything in between.