Forum:Team Guard Effects?

As a lance user, having a gigantic shield to hide behind, I've always wished I could also protect my team mates. I was thinking maybe that guarding an attack would invalidate the rest of that attack to some degree. Like a monster does a charging attack, and someone with a gaurd ability such as a lance were to block that attack, it would reduce the damage that attack would further do by like 50% or something. A Greatsword might reduce it by 40% while a SnS might reduce it by 20% or something. Basically the point is that anyone who's hit by the attack after it's made contact with the gaurd takes the reduced damage. Bolt style projectiles would obviously be negated by a gaurd attack as they always have. Not sure how they'd program that kind of effect with a beam attack though.

Thoughts? confusions?