It's high time SCR operates another train to Kerala as Sabari Express runs jampacked for most part of the year.
I would suggest a Superfast/Garib Rath from Secunderabad(SC)/Kacheguda(KCG) to Trivandrum (TVC) via Kurnool, Gooty Jn., Dharmavaram, Hindupur, Bangalore City Jn., Salem, Coimbatore, Ernakulam, Kottayam/Alappuzha.
Feedback welcomed.