You do realize that Maharashtra and Gujarat are also economic powerhouses and the people of both states do notAll big countries other than China suffered from decentralization problem. The problem of India moving slow is because vested regional interest impedes the decision of central government.
India has already been broken apart, first into Burma, then into Pakistan. The strip down state is more manageable and governable, and fortunate for India.
If there is no partition, India will become Muslim majority by 2050, a nightmare to the Hindus.
A Dravidian Nadu is good for Tamils because traditionally all Indians woes come from the North. The rape, severe caste system communal riots are the works of Aryan in the North. The South are peaceful, creating one economics powerhouse after another such as Bangalore, Hyderabad and Chennai.
When breaks out of India, Tamil Nadu can move ahead, while the rest of India, will be lightweight and agile to make better decisions.
speak Dravidian languages. There is no need for further partition because India is a federal state where every state
has the right to follow its own politics unlike China.