Cheaper to build, less men to man it, fast as hell............and used for coastal duty..............
Better to go back to old less expensive designs than this piece of junk. Or use the money to put in underwater acuistic detection systems.
IIRC these were maintenance nightmares, however, with the newer modern technology available I believe that this design could indeed be the solution to the issues at hand. Pound for pound these were the most heavily armed vessels in US Navy history absent nukes.