SNS3Guppy,
"...one does NOT need to always consider the departure or destination, and there are generally plenty of alternate options enroute, even in remote parts of the world, should the need be. The only time this is not the case is during times of widespread weather (such as a cyclone), or on extended oceanic legs (when we do plan for alternate diversions..."
There are only 02 AWY connecting Lahore FIR (OPLR) and Urumchi FIR (ZWUQ), B215 and W112 both originates from PURPA intersection. Unlike the states, I'm afraid there are not much ENR ALT APT on that part of the planet, only 1 or 2.