I have such a spectate mode for myself for development purposes, but I am reluctant to make it public. First, one can easily cheat this way oneself. Second, due to incomplete knowledge the AI appears more deliberate/sinister as it actually is. Actually it combines only a handful of local rules with a very coarse strategic planning layer. This simplicity would become much more obvious if one could watch its behavior in total, so I fear it could do more harm than good for the overall game experience...