Superpower doesn't mean military power alone.
However, India isn't superpower yet. A superpower like USA is today or USSR was in its apex, can shrug off global dynamics and chart its own way cutting through global pressures as they will. Neither Indian economy nor domestic dynamics support that, and military is far from being anything even close to be something that can flex its muscle far away from Indian shores.
However, Agni-VI allegedly has a range above 10KM+.
Strategic bombers are outdated unless it comes with super stealth like B2 or B21.
As I stated before, domestic dynamics as well as limitations in military capability don't allow India to flex its muscle away from its shores. Last time India did in Srilanka, it turned out disastrous due to domestic as well as diplomatic problems coupled with limited military capabilities as well as restrictions on use of force.
NAVIC has limited scope, but can easily expand since it merely needs a couple more launches. However, India also can use Glonass. Though arguably, this limitation of dependency on Russian tech is also a marker for India having not yet reached the superpower status.
UN doesn't matter. India always keeps a clean image and that's why it follows the broadlines of US mandates. However, more than UN, the business relationships matter and that has potential of getting hurt if India breaks off from the superficial adherence it gives to the UN mandate.