Hm, well I could see it firing SNs, just at a reduced capacity. Perhaps make it lightly armored in relation to other SHFs and bombers, turn around Praetorian speed, and have a power plant slightly lower than the low end one we have now. That way an SN would drain about 75% of the core. 3 slots could make it useful in fighter combat with it's capable handling, equipped with a Razor and Train CD. A sort of multipurpose hybrid bomber, suffering from armor only marginally higher than a VHF.