BB's are too manpower intensive..to expensive to run as far as fuel costs go..and would need major electronic modernization just to be part of a battlegroup. They never even got NTDS or any data links when they were last reactivated.
The DD(X) and LCS type ships are just what the Navy needs. We have not had any major technilogical advancements in our warship designs since AEGIS was designed in the 70's. Even the Arliegh Burkes are from an early 80's design.
The cost is worth it in every aspect. These ships will have new radar, new guns, new missile launchers, new propulsion system, new combat system design and only 85 crewmembers. Not to mention a pretty revoulutionary topside design.
They have to build something to replace the aging "TICO's"..they are already decomissioning the first few. The FFG's will be gone soon. The Spru-Cans are already gone. They can't expect the Navy to put everything in one class of deficient ships (Arligh Burke). And even the first Burkes are getting old and their material condition sucks.