As mere weapons of war, SSDs could have been scrapped. But Lusankya was no longer a mere weapon of war. She was also a science research ship, and doubtlessly may have had portions turned over as a med center. While she would probably still have maintained her weapons compliment, and probably her fighter and ship/shuttle compliment, other factors would have changed. She would no longer have been viewed as a mere weapon of war, but as something a bit more.