You seem to be clearly caught in regionalism, which totally has not only divided our nation but also leading many of us towards a wrong path.
Tell me what difference does it make if Belagaum belongs to Maharashtra or Karnataka? It now belongs to Karnataka, so be it. Be proud such a beautiful place is part of this greatest nation. You want regional fanatics to take over Belgaum? or you want opportunists to take over it? Any way, its the same. Its just politics all the way. Understand that first!
Get your concept right - Provinces or States are created only on 2 factors: 1. Based on people and 2. For ease of governance
Dont assume the first point and tell me there are more Maratis, and Belgaum should be in Maharashtra. Then, many places in India will have to be remapped. Instead, think constructively. How about both states pitching in for a beautiful place like Belgaum? Why cant that happen? Wouldnt the people of Belgaum benefit? Ofcourse, this wont happen until the opportunists and fanatics think about improvement and we stop supporting them.
Please, think constructively. Just renaming of places it so much a waste of time and money, think about moving a district from one state to another and will that bring anything fruitful? Certainly not.
Maharashtra is Maha-rashtra Karnataka is land of Kavi's (writers, which has given innumerable gems of writers).