Nice idea. Then, SWR can have GTL divn covering part of TS/ AP and SCR will get GR divn of KA. A kind of balancing is done. Continuity of area will be there. Main advantage would be that trains from SBC to GR/ HYB will get more priority in SBC-GTL section, since they would come under same zone.
If TPTY divn comes up, then some sort of realignments can be there within GTL and BZA divns.
However, considering the SWR's reputation in messing up the things, no one in GTL/ SCR will...
more... prefer to get attached to SWR.