my take
My gaming group has come up with something similiar. We had the base damage went directly to hit points, but the multiplied damage went to fatigue. So if you crit with long sword and roll a total of 10 points damage, 10 went to hit points and 10 went to fatige. A battle axe with a crit and 10 points rolled means 10 goes to hit points and 20 goes to fatige. Works out a lot better that way and doesnt change the weopon stats very much.
My gaming group has come up with something similiar. We had the base damage went directly to hit points, but the multiplied damage went to fatigue. So if you crit with long sword and roll a total of 10 points damage, 10 went to hit points and 10 went to fatige. A battle axe with a crit and 10 points rolled means 10 goes to hit points and 20 goes to fatige. Works out a lot better that way and doesnt change the weopon stats very much.