Howmuchever we debate on the country being one and all country men are equal and blah blah blah, the fact remains that the "issues" are true. Which means that marathis will always blame outsiders for choking the city... which is true.
Mumbai is a different city and needs to have a visa system. Why dont the "outsiders" go to the US? Why do they come to Mumbai? Special problems need special solutions. A visa system will not only keep a check on unnecessary crowding, but also on terror activities.
That apart, we need to shift the whole media industry outside mumbai. Some huge barren land, on which free infrastructure is provided as well as free land parcels for constructing studios. That way the media will be out...and wannabe actors need not come to mumbai, they can crowd the "new place".