May be you have got a point. But Mumbai is already the underworld headquarters of India. And Shiv Sena are # 1 goondas in Mumbai. You can't blame SP or BSP or North Indians for everything. And people vote for BSP because of caste reasons, not necessarily because of being North Indians.
And what is the rest of the states ask Maharashtrians to pack their bags? What if all industries run by non-Maharashtrians pack their bags from Mumbai? And what if the rest of India stops subsidizing Mumbai's local trains? Stop creating silly parochial feelings here.