Small missile boats can work in the Persian gulf but not in the Bay of Bengal or Indian Ocean. I think we need a large sub fleet and cruise and ballistic missiles.Iran also has highly mobile platforms like mini torpedo boats to launch those missiles from close quarters. Like 'swarm attack' strategy. If they can fight against the US with that strategy, no issue with us using those ideas against our naval adversaries.
Look at how heavily armed Pakistan's small LPC Azmat class is, which is meant to use 'shoot and scoot' strategy. Classic small Navy doctrine. Azmat class is smaller than even our locally built Durjoy class variant.
Same strategy with Mini subs Pakistan has. WE need to get some or build some.
You guys are echoing my thoughts exactly.