[q="EHngel"]So, basically, ANY other Token except a Clue Token and a Defeated Investigator, may be put on a Devastated Space, correct? (e.g. Gates, Monsters, Mysteries, Adventures, Mystical, etc. are all OK)
Anything that doesn't specify that it needs to be a city space. This can lead to some interesting interactions. If you have a courier run to a city that becomes devastated, you cannot complete it, since you can't have a location encounter on that space any more, only a devastation encounter. But if you draw a courier run, and the clue you draw for it is a space that's already devastated, you redraw, since that space is no longer a city space.