KTYM line didnt changed TT because it is small section to get any significant change. When VM CGL is doubled no one saw significant change in TT. and the things dragging KL trains are PF congestion and other infrastructure based. On other hands, VM, TPJ, MDU, TEN has lot of PF to handle trains. TCR ERN QLN TVC cannot match any of the Tamil Nadu based Major junction stations when comes to PF number and Handling. Now Ananthapuri got 6 am arrival in chennai so gap between ananthu and CAPE MS can be widen in future. If that happens then Island CAPE Ms wont be much issue. There r RSA like Pandiyan Cholan Rockfort, Mannai Chendoor, MS SA MS CSMT mail maintained perfectly, like that this may also become good. MS CAPE if maintained in NCJ, definately can RSA some trains too. I can say TBM NCJ Tri weekly can be...
more... made daily with MS CAPE RSA, same way with additional rakes TBM SCT SF/Silambu RSA possible. Getting Egmore maintainence slot is tough but if Tambaram given the above all trains combo or Kamban or Mannai or MS SA or MS MAQ RSA is possible technically.