I think you will find that she was then, and her legacy is now, fairly controversial amongst Indian citizens. This should be an interesting discussion if we / the OP can get it re-started correctly after this stumble out of the gate.
I’m from India, and “nice lady” is most definitely not the phrase that comes to mind when thinking about Indira Gandhi. She was an authoritarian PM whose legacy is controversial at best. Her ruthlessness in dealing with any opposition is one of her defining characteristics, and she was known for arranging things to get her own way rather than any sort of conciliatory approach. Her strongly socialist and centralised economic policies held India back for decades, in my opinion.
Sanjay Gandhi as her successor would have been an absolute disaster for the country, by taking her policies and authoritarianism even further, and I’ve often thought that his death in a plane crash before he could really get started was a small mercy.
I still think it would make a great movie, but I wonder who it would upset?
After 30 years could you still use real names … not a documentary, but a real movie with real facts. The truth of this story is all the plot you would need.
Who would it upset in India? Lots of people in the Congress party, for a start. The current Congress (and let’s not forget that it was officially known as the Congress(I), where the I stands for Indira, from 1977 to 1996) is headed by Indira Gandhi’s daughter-in-law, and IG’s grandson is all but guaranteed to be the next dynastic leader of the party. There are lots of people left from IG’s era who would happily take offence on your behalf, I imagine.
India’s record on freedom of speech and expression is a bit patchy, and censorship of films is far from unknown. There is a strong moral police whose approach tends towards violence and bogging people down in long-running lawsuits, and therefore I think a film on Indira Gandhi that showed her as an autocratic power-hungry leader wouldn’t get very far. That’s just my opinion, though.
Indira Gandhi is easily the worst thing to have happened to India after independence, for all the reasons you mention. She utterly eviscerated India’s political and economic system to concentrate power within herself. Strangely, while most thinking Indians I know would agree (although some make the mistake of extending her faults to Nehru) there is no formal analysis that I’m aware of which makes this point. That fact saddens me.