I like the "Hafted blade" and "Long Hafted blade" because:
1) For those of us not used to the japanese or chinese or whatever denomination.
2) Because those types of weapons weren't only japanese or only chinese, since we only have "one" hafted blade and long hafted blade, they shouldn't suddenly become the property of one culture/history or the other, because it will feel stupid for the player that could pretend their hafted blade was this or that.
3) The MB ones are rough designs that resemble many historical weapons, without being precisely one of them.