And what purpose does it serve?
Its equally harmful to both countries, I'd say more harmful to us they will have more ssn and ssgn.
Unlike blockade where risks and costs are worth it due to damage potential to china, acting as a potential deterrence to discourage china from expanding the land conflict.
Eastern assets are not equivalent to UP corridor.
Target their eastern assets and delhi will be targeted in retaliation.
Targeting eastern assets make sense if they target delhi etc first.
Again does not provide significant deterrence to us.
Its more of us acting like suicidal country, willing to hurt yourself equally or more in an attempt to hurt china.
That's not how deterrence works.
Deterrence as a concept arises from the idea of destruction. Deterrence is meant against a superior enemy. And deterrence comes from lethality.
The whole concept of deterrence through nuclear weapons comes from MAD aspect.
The strategy of blocking malacca strait in Chinese invasion has been there for decades in military discourse on both sides. It's a folly to think that, if Chinese invaded, they won't do it without sufficient readiness by PLA, PLAF, PLAN to push back or bypass the blockade. You can even expect a pre-emptive attempt to block IN out of the strait too. Then there's increasing connectivity development through eurasian, pak ports etc.. Just relying on strategy of blocking will not deter Chinese anyhow. The blockade is an important part of deterrence, but only in two cases: we are powerfull enough to sustain it for months. Or its an allied initiative. Both cases are different from near future. Atleast infeasible untill late 2040s if everything goes right.
Is there some other kind of " war" you envision? China is unlikely to invade on North & northeastern border without activating Pakistan. That itself puts Indias sovereignty and population at stake. Threat towards Delhi = That's why we invest in (Sudarshan Chakra) layered AD.
And please remember, India is not just delhi. Even the thought that it's okay to give up on any other party of India as long as delhi is not attacked, is cowardice and a betrayal to the people.
Other than that, I don't know what kind of scenario you're envisioning where a war doesn't put out sovereignty at stake.
A scenario of small localised battle/ skirmish/ war will hardly be impacted by the blockade. A land or air based hypersonic cruise missile and potent rocket force can do the job of deterrence that you envision from a blockade, notwithstanding the fact that even a blockade will escalate the clash between navies risking our southern parts anyway.
As for the risk & reward part of the escalation ladder. We do have Aircraft carriers for that even now. An extra aircraft carrier at current juncture ( 2025-2040) will not provide any extra layer to that escalation ladder.
The next part comes from submarines and underwater doctrine.
Note: The nuclear deterrence is there but that's the last ladder. After exhausting the conventional ladders. We need more strength in conventional ladder.
Note 2: I rearticulated my message as previous one was coming off as more confrontational.
.. Do we have same metric for USN &PLAN for reality check. And European , russia naval for comparison. 
