The 4d long voulge was pretty much only used by Bars, but the economy in strat at that time favoured peasant armies and the Long Voulge was really, really good in those battles considering its price, so they nerfed it.
Now we have the strategus armies crutching loomed high-tier gauntlets, plate and other high-tier armours, with the best weapons available crafted. The Long Voulge would never be used (except by Bars probably..) in this version of strat. Make Long Voulge what it was or what Teeth suggested. As of now it's one of the, if not the worst weapon in the game.