Can’t think of scenario where the Paks would want to jeopardize the aid they get from China, nor from Boeing and other western airlines who could not approve of this type of hijacking
***
I am thinking that your error is in thinking logically. If, indeed, the mohammedans have the plane and are planning to nuke Israel with it, they are not concerned with future relationships, as they are hoping to bring about the end of the world and the rise of the 12th imam — or whatever that garbage is that they believe.
ah, you would be talking about Shia muslims, Iranian, not Pakistanis ... I believe most of the Muslims in Baluchistan are Sunni and other, not Shia
Iran also has need of Chinese cooperation in its weapons programs, has had Chinese aircraft radars and missiles for a long long time and I believe that is the Iran Rev Guard, the radicals, that handle the Chinese weapons (Silkworms and the like) - China also probably plays a role (or could) in the Iran-NK nuclear cooperation
so seems Iran unlikely to jeopardize relations with China by seizing a planeload of Chinese families and involving them in a jihad attack- and Israel is unlikely to be taken by surprise by a rogue Boeing 777 with its avionics pinging Boeing as to its identity
I would be surprised if this was not a suicide mission flown by the pilot, ending in the IO where recovery may never occur