Compare the route Miraj kurduwadi Solapur line with kudachi Bagalkot hotgi line. Does not make much difference.
What is that zigzag route ? even the train which passes through Miraj kurduwadi Solapur line has to travel inside Maharashtra and then come back again to Karnataka only to go to Secunderabad. this train should run from Secunderabad to Kolhapur. And a new train should start between Secunderabad and Belgaum by taking the Bagalkot Kudachi route, this will serve North Karnataka towns.