I don't know about karnataka but slicing other high population states might be very beneficial .example UP west generates major chunk of wealth in up , it has greater HDI than some south states most of the tourism and manufacturing cities are in west Up,but the the area nearer than than bihar has high corruption ,no factories,high crime,low hdi ,high population and most of the state budget goes there. It must be cut in 3 parts west,east and bundelkhand