Self-licking ice-cream cone hopes and dreams from the rent-seekers.
As for the weapons systems and the management there-of:
1. No proper "Needs" analysis.
2. No proper "Requirements" analysis.
3. Marketing over true language of skilled engineers (tail wagging the dog).
4. Group-think in large quantity.
5. Rent-seeking before valid defence of the nation.
The greatest threat to the nation is the national debt and a business-unfriendly government. If these two things are not fixed properly, and soon, there won't be a defence worthy of the name because all the government really cares about is bureaucratic power; soaking the taxpayer; and nanny-state uber alles.
A 4th Air Warfare Destroyer? It is not needed. Just like the 1st, 2nd, and 3rd AWD. Simply because it was a bad idea. Someday we will need to replace our current frigates with the exact same capability. Like-designs in an affordable manner. The AWD, along with the Canberra-class large flat-top amphibs, hurt all of Defence because they take billions away from other needs.
The AWD and Canberra-class amphibs are unsustainable. They need crew resources we don't have (with help of an insurgent DMO) along with other sustainment issues.
And, without a valid air power plan, (including depending on the U.S. which is well on the way toward an obsolete-to-the-threat carrier air wing) can only be dead meat in a real war.
As the government runs out of more money to do things, look toward a future where the new big ships are tied up to the dock most of the time. When they go out, it will be with too-few crew.
Hollow force. Can't live within our means. Throwing away existing capability.
An insanely expensive paper-tiger.
No crystal ball needed.