OK...then mandate feet first sliding.
Ironically, in the Cousins/Posey collision of 2011, it would be Posey that would have been in violation of the current rule.
The onus needs to be on the base runner, not the catcher. The catcher is in a defensive position (trying to secure the ball and tag the runner).
I miss the old days.
These modern guys would soil themselves if they had to face someone like Ty Cobb. He would've killed* to win a game.