Err wut?
So...
Suddenly a 3rd gen Bar Mace is useless entirely because it loses it's crush through ability? Shut up, get the hell out of here.
Heirlooms should be perm, that's my theory.
You don't inherit something from your Grandpa then years later decide that you would have rather inherited something other than what you got. Plainly said, fuck off.
+ as stated earlier, all these bar mace users would just go to the next big OP thing, they don't care they just want easy kills, let them suffer with their 'useless' maces.
Pretty sure 3rd gen Bar mace is 39 blunt damage, if you consider that weapon useless then, well I don't know what to say about that.