A 14,000 ton "destroyer?"
I'm with you. The whole DD(X)/CG(X) is nutty. The AGS is not even developed yet. It's a classic "one ship does everything" (aka One size fits all) deal. Even the LCS which is considered littoral in nature weighs almost 3000 tons. (I served on an ocean going DE/FF that weight in at 2500 tons.) At least the LCS project makes sense and the cost is only around $210 million/ship.
http://www.naval-technology.com/projects/littoral/
The reason the DD(X) even came about was because the DD-21 become to big and expensive. Here's a good read on the subect, warning it's a big .pdf file, but worth the time if you want to understand this important topic.
http://www.fas.org/man/crs/RL32109.pdf
Man...
A 14000 ton destroyer? The displacement is indicative of the cost in this case. It should have thrown up a red flag.
You're right. This thing is out of control. Once DD-21 spiraled out of control, you think the Navy would have learned. No! They continued the insanity with DDX. Same old story... too many new technologies to pay for.
Hey Navy! Do what you do best. Develop these new (AND NEEDED) technologies slowly and methodically. Integrate them into current DDG's and CG's that have favorable service lives. You're decommissioning ships too early.
Once your current hulls have exceeded their life expectancies, then develop new hulls and install guns, sensors, and weapons that are proven.
A great link you have there. (Below)
http://www.fas.org/man/crs/RL32109.pdf