At present, much of what India buys from indigenous sources is over-priced, obsolete, or defective. Procurement officials are too often slow, incompetent, and corrupt. And India's national security strategy is unclear, making for a lack of coherence in procurement.
With a pressing need for new high end weapons and equipment, India would be well-served to get those weapons on the best terms possible without extreme demands for technology sharing and domestic production. Otherwise, India will expand and compound the problems of its dysfunctional procurement system and arms industry.
Again, to sum up, India needs weapons and equipment from foreign vendors in order to boost her military capabilities, and she needs reform in procurement before she can hope to have a potent indigenous arms industry.
And, sorry about having to say this, but India does not have the fundamental strengths needed to become a superpower. She will have to work hard just to become and remain an effective and respected regional power in the coming decades.