Grow up.
Combined arms are needed more now than ever.
They are expensive to maintain.
But I would recommend gutting their engineering plants, installing gas turbines, and make them both fuel efficient and allow gs types (not boilermen) to have a chance to serve on the Battleships..
Maximum ordnance on target is what will be needed often and repeatedly.
Getting rid of these platforms would be a mistake.
We can't build as good a platform. The men who could are in resthomes or in their graves.