Agree. In case of Mangaluru , bus operators have an upper hand over railway in terms of intra-state connectivity due to Zonal tussles and differences . The ones plying are too slow (Eg- Mangaluru - vijayapura Express) .
Similarly, Vasco is more a " freight revenue milking cow" for SWR .
Ultimately, general public has to suffer in both the cases .
Rather...
more... than carving out new divisions/ zones, I personally feel some reorganization of the territories of existing zones would be better ( as suggested by you).