See, the most 'powerful' leader we had after Indira Gandhi was the current PM and he used to have public support because everyone was thinking that he'd do his magic.
But he won't be able to become a dictator. The loophole which Indira Gandhi used to form Emergency was removed and there is little chance that someone like her will be born, go to the top of a national party, win election and then form a coup.
Our armed forces are controlled by the President who, usually is voted from the outside, she ain't just a rubber stamp. Plus, not to mention, we don't have a democracy, we have an oligarchy, the politicians own businesses everywhere and the big business houses own all political parties so even if we became a dictatorship, the big business houses will be the ones to lose, at least one of them and that's all it takes to form a coup to kill the dictator.