It's an awesome idea. I've always wanted to dual wield machetes as the ultimate "break-out" weapon when you get encircled and you need to kill lots of specs NOW. Throwing is a great idea too, though it would be nice to have a pointier machete model for it. Also, I don't think it would be viable for berserkers to abandon ranged weapons completely unless you could carry more than one of each melee weapon, maybe have them stack to a degree so you can carry enough.