If its for HWH, its fine. If its again to SHM , then people will reject it.
And With the way various trains like SHM AC, SHM SF, VSKP SHM Sf perform, Kolkatas demand is almost met.
.
IMHO, MAS, SBC, NDLS, ERS/TVC/MAQ and JAT are the top priority for VSKP. A train to any of the 7 sisters of India is also welcomed.