5 USN, 2 JMSDF, 1 RAN carriers in Pacific alongside new USAF, USMC deployment in Philippines and Australia will pretty much stop PLAN foray beyond Taiwan and put reverse pressure on 9 dash line.
We can field 2 carriers and ASBM, brahmos batteries to choke lines from A&N and TN.
Our strength area will be ship to ship attacks at extended range(800 to 2000 km), something which others lack...so provide air cover to our flotilla and let us release the ER javelines...
Japan's strong area is air cover from ships and their excellent fleet of SSKs, more suited to SCS depths than big SSNs.
A quad alliance seems be becoming a necessity.
Such a tying down of China means they can just spare a few cruisers, destroyers for Indian ocean.
We can match them 1 for 1 away from us like Gulf of Aden etc and have local superiority near coast if they try.
While PLAN will hold local dominance near coast, taiwan and harass small neighbors, they will not be able to counter 8 carriers facing them.
Pretty much stops them from being a globally deployed force and reduce ships they can throw at us in Indian ocean.
Secures our supply lines.