Dear, would you please enlighten me that who will appoint Imam Mahdi ? Shia ,sunni, dev bandi , ahle hadis ?? And will it be compulsory for muslims to obey him or do bait on his hands ?
Don't worry about that Mahdi. First check what achievements did your 'Promised Messiah' had during his lifetime. Didn't he create a group under the protection of British Raj which is being persecuted in Pakistan? So don't you need one more Messiah and a saviour to fight these rebellious Pakistanis?