In a former subject, we talked there about the possibility to use the Fight skill to parry attacks. I think perhaps the Shield skill could be used for it.
So if a player use the Shield skill that way, he throws the dices using a Minor Action, and can still Attack with the other Minor Action.
That will avoid perhaps that players with Fight 5 Sword 3 or such could kill characters with a single blow. Even when heavily armored. Of course it can make the PCs almost invulnerable... I still have to think it.
I still perhaps an advanced rule could be made to reflect that shields, sooner or later, ends destroyed.