I have mixed feelings about Aurangzaib (rahmatullah alaih). Overall, he was a good king, but he was also a sinful person, who will have to answer for his personal transgressions, like how he dealt with members of his own family. Therefore, I consider him a Muslim hero but not a Muslim saint. Most of our kings and rulers were personally not pious people, but some like Aurangzaib did offer some valuable services to the Religion and the cause of Shari'ah. Aurangzaib was right, in my humble opinion, to quell the terrorist Sikh rebellions. He was correct in having Tegh Bahadur executed. He was also correct in having Sarmad the nudist executed. It is enough for me to hail someone like Aurangzaib simply for the fact that our enemies, the Hindus and Sikhs, despise him.
However, someone who I think was greater than Aurangzaib was the ruler of Kashmir, Sikander Butshikan (rahmatullah alaih) of the Shah Miri dynasty. He was more zealous than Aurangzaib for our Religion. His title was 'Butshikan' because he was famous for having Hindu idols and temples destroyed during his reign. Therefore, I consider Sikander Butshikan the greatest ruler in Indian history to date