Though a well worn phrase, we really can learn more from our failures than our successes. That only works if you are willing to accept your failures, identify what led to them, and strive to both understand not only the failure itself, but the steps that led you there.
By almost any measure, SC-21/DD-21/DD-X/DDG-1000 has been a failure. One of the best things we did was to halt the program at three ships. The better route might have been to just cancel it altogether, but I think good people can disagree on if there is value in keeping what we have as a technology demonstrator that will deploy now and then so we can harvest the good ideas for future programs. An expensive lesson, but a turnip that does have some blood.
The rump-DDG-1000 class is also a perfect icon of the Age of Transformationalism. As with all the programs of that era, we will continue throwing seabags full of money at the problem to try make the best it.
On the surface side of the house, there are the three Hulls of Transformationalism, LCS; LPD-17, and our bespotted DDG-1000. As was foretold, with enough money the Tiffany LPD-17 class would be made functional. That gilded line that leads to acceptable adequacy has yet to be made with LCS/FF, but as of now we are fully vested in making the best of that too – and eventually we will. All will be content as long as no one looks at the opportunity cost and what might have been done if we did not fully embrace the Cataclysm of the Age of Transformationalism.