Creation of new division can be a problem. Why not merge MAQ MAJN to KR or SWR Mysore? SR PGT division can have all Kerala trains from port terminal.
If Thokur to MAQ is given to KR, zonal issues will be nil. For south bound trains from Konkan, and for MAQ to east side trains, MAJN will be the interchange point.
For...
more... MAQ Port to south bound trains, no change as they continue in SR only.
In MAJN, new development are taking place. One PF can be used by SR for SR/ SWR interchange trains (like CAN SBC express).