Yeah I was thinking of that definition of Intercity too but then noticed at least 2 such trains that run overnight (Indore-NDLS and Rourkela-Jagdalpur), so thought I could go ahead with that.
Had given a thought to the extension to KOTA as well but then it wasn't sitting well with my return TT (presently given 2 hours turnaround time at GUNA). Will need some speeding up and I was reluctant because of the single line till Amla. Please suggest if some tweaks can be made to accomodate Kota extension.