Developers have said before something along the lines of the following: Spy quests will not be added to the game because spies were never intended to be one of the main aspects of the game. From that, it's sadly obvious this thread is going no where and is a waste of space. Sorry to buzzkill.
We have quests that use soldiers, why not quests that use spies? SUPPORT Signed, FeatherGuy (PS I dont think its gonna happen though, sadly)