I'm sure somebody already suggested this a while back, but here goes: Why not give it custom mech weapons and missiles?
It could have... four weapon mounts apart from the three torp slots, which'd mount two Battle Mech Lasers and two Battle Mech Missile turrets, the torp slots could be filled with two battlemech assault missiles (same stats as sunslayers) and one razor like mech gun called a blaster or something.
Obviously this would cripple it in the CD role, but it's suposed to be a specialised ship anyway, so maybe it'd be a good idea?