Marathis would be eager to leave other states if you hordes of outsiders leave Mumbai! Slums are formed thanks to illegal immigrants from Bangladesh & outsiders like you coming from All parts of India who sty here illegally.
If you hate these slums so much then ask you brothers, sisters & other relatives to go their village & never return back. You guys were given shelter out of pity & humanity & now you're trying to move out the original children of this land?
You're fortunate that Marathi guys are very humble & polite but there's a limit for everything. IF you guys step across it, you would repent it for generations (if ever you could produce those). Enough of this stupid play with the emotions of Marathi guys. Go back & spare yourself & Mumbai.