dual heavy cannons
dual beam bank
i think we need to add a few more choices-
heavy single cannon
heavy dual beam banks
heavy beam bank
point defense array (think like a turret- low low damage but 360 protection)
have the power costs of the heavy weapons go up and the power costs of the turrets and point defense arrays be slightly higher then the normal (regualr awway and single cannons being the basis for normal) weapons.