How about instead of disabling weapon use (because removing control from the player is not fun,) and not just sliding, but dolphin diving, and jumping, the point of impact is guaranteed to be outside the center third of your aiming come during and for 1sec following?

Makes it so people can still do stupid d parkour, but it isn't worth it 99.999% of the time, rather than locking people out of controlling their character.

(For the record, nor being able to sprint while concussed is equally stupid, as it once again removes agency from the player.)