Isn't reconnoitering usually accomplished with satellites, drones, spies, and intelligence information gathering?
Isn't sinking warships usually accomplished by missiles and special forces sabotage operations?
It sounds like the Marines are trying to pivot to play a more significant role strategic planning to counter China.
Island hopping has very limited potential in the Atlantic and Indian Oceans. It's greatest value would be in the major shipping lanes of the eastern and soutern Pacific Ocean, the Bay of Bengal, the Red Sea, and the Mediterranean Sea.
Are the Marine trying to develop strategic land-based commerce-raiding units?