Moar laser vomit, combined with a shield arm and torso-mounted Large pulser for when your arms inevitably get blown clean off. When the people who made battletech made the Phoenix Hawk, did they purposely put all the weapons in the arms just to spite their players? Or is there something i'm missing....
Two things about that. First, I think they were basing the weapon locations based on the art. Macross Valkyries carried their main gun in their hand. 'Nuff said. Second, unlike MWO, you can't really pinpoint shots like that. You roll to-hit and the hit location for weapons individually, so if you never roll a 3 or 4 on your location chart, you might not ever hit that arm.