You're probably right. I do think that for the integrity of the game, they have to get rid of the fake injuries where suddenly a guy goes down like he's been shot. Too many cameras to allow that to keep happening. At least make the defense work at it lol.
the other issue with a rule is, players get tired which can lead to more injuries. So there will definitely be an argument that by forcing players to continue to play that can't get out of the game otherwise, risks serious injury.
not an easy solution.
The only possible solution to me is making it another judgement rule for the officials. they have to determine if a player is faking or really injured. and we all know what happens when officials have to make judgement calls. pissed off fans and coaches,