I will say, the reason that weapons grant that little bonus to banes for might and agility is to help balance out the greater versatility that extraordinary attributes already have.
Not to say you shouldn’t do this, or that it is a bad idea, just wanted to put that out there.
I’ll post some more thoughts and ideas later, been working for the last week in a half… maybe 2 weeks in my bro-in-law attic, so haven’t had a chance to rest at all, but today… should… finally… be the last day… it really… really… should…