My suggestion is for obtaining additional capacity to SBC/HSRA/SA/CBE from TVC/QLN/KTYM as there is no day train till date. New trains requested are pending for years. 12677/12678 extension from ERS to KCVL can be implemented easily by Railways as there is no additional rake requirement.
Extensions are quite common in Indian railways and no need to get paranoia about one particular train. For example, 11014 Bangalore-Mumbai LTT express was extended to Coimbatore few years back and rail passengers supported it.