The city of Mumbai has contributions from Parsis, Gujratis, Sindhis,North Indian and south Indians. Its a city of immigrants and no one can call it belongs to Marathis.
If the Thackreys were really so good and adored why the people of vidharva want a separate state.
You donot need enemies ( read Terrorist, pakistan, china) if you have your indian family with these thackreys.