A subversive one could be "Arrogance".
This takes the form of a negatgive influence you can deploy against a nation that thinks itself a bit too big for its boots at any given point in history. This is a transient thing that only last for a set time against a particular opponent.
So, for example:
US colonist can deploy British Arrogance in the 1770's. After gaining laurels in the early and mid 1700's Britain firmly sat on them for a little too long = bloody nose
France can deploy Prussian Arrogance in the 1790's and 1800's. Prussia had clearly declined but thought much of its Frederickan legacy = bloody nose
The British can deploy French Arrogance in the 1800's due to French Napoleonic superiority complex and megalomanic psychopathis(sp?) = bloody nose
Later, maybe out of scope of the game, the Russians can deploy British and French Arrogance in the 1850's. British because of another case of laurel sitting, French because of their inveterate belief in their own cultural propaganda. Though that is tempered to a large degree by Russian Incompetence, so that one is a draw = bloody noses all round.
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