GMO isn't a well planned station like HWH. It's just upgraded from a siding station. QLR is no good idea as first taking the Loco from shed to platform will consume 17 mins. minimum then after attaching and detachment, waiting for the signal will take another 20 mins. minimum. Simple LR is useless to think. GMO can't stop mainline trains cause it will effect others too.
WAG9 can't power LHB Shatabdi to it's requirement. Anyway WAPs can be transferred for the operation.