I love the Iowa class BBs, but I love the Montana class BBs more, and would love a new design even better.
The challenge is, getting guys to appreciate what they have in inventory already and commit to its employment, before you can sell them the idea, the expense, of committing to a newbuild ship.
Your competition is lobbyists selling foofighter visions of omnipotent new weapon systems that will render all seaborne forces obsolete, etc., etc. -- the military and naval equivalent of vaporware. They will prove to be a fruitful source of knocks against existing systems and equipment.