Already Dr. Rajendra Prasad [First President of India] and Mr. Sardar Vallabhai Patel [the iron man of India, who is instrumental in formation of Indian Union raised this issue, that states should not be divided on the basis of linguistic basis.
But the political colours at that time, has allowed this type of formation.
Even Anna was instrumental once in supporting a cause for separate Tamil Nadu.
Link all the rivers like Ganga, Cauvery and Godavari.