I've drawn up a way India can be divided into more civilizations:
Punjab (represents the Punjabi people and the Sikh Empire; possible leaders: Ranjit Singh, Sada Kaur)
Hindustan (represents the Indo-Persian synthetic high culture of Northern India and the Islamic Sultanates in the region including the Tughlaq, the Mamluks and the Mughal Empire; possible leaders: Sher Shah Suri, Razia Sultana, Muhammad ibn Tughluq, Akbar)
Bengal (represents the Bengali and Bamgaldeshi people and the various Buddhist, Hindu and Islamic states in the region; possible leaders: Shashanka, Devapala, Ram Mohan Roy)
Deccan (represents the Islamic states in the region including the Bahmanids and their breakup states including
@Henri Christophe's beloved Ahmadnagar Sultanate among others; possible leaders: Ahmad Shah I Wali, Chand Bibi, Malik Ambar, Ali Barid Shah I, Ibrahim Adil Shah II)
Maurya (represents the Maurya Empire; possible leaders: Ashoka, Chandragupta I)
Tamil (represents the Tamil people and the four Tamil dynasties the Chola, Chera, Pandya, Pallava; possible leaders: Rajendra I, Karikala)
Kannada (represents the Kannada people and the Vijayanagara, Chalukya, Rashtrakuta and Hoysala empires; possible leaders: Krishnadevaraya, Veera Ballala II, Vikramaditya VI)
Telugu (represents the Telugu people and the Kakatiya and Nayak states; possible leader: Gautamiputra Satakarni)