If GR comes to SWR, being another zone (apart from CR and SCR), definitely SWR can put their foot down and allot stoppages at stns wherever they want. That can solve problem to some extent.
But whether SWR is sensible enough the understand the problems of GR is a big question. This is because, KSK via Hubli does not have stoppages at major points like ASK, Birur and Haveri which can help passengers of Hassan, chikmagalur, Shimoga areas, which are very much part of SWR. Timings of this train is also not suitable for intermediate pax of these areas.