The option should be individual, so you can watch the LB when you use it, not when other does. Basically who can see the LB with that option should be the one that uses the LB.
For example, when one melee uses his LB he get's stuck when it does the limit, but all the others don't, so he could see the LB with that cinematic look like if he checked that hitbox, but the party should not have any change, even with that option checked, to let us to heal, dps or tank without any problem.