This is more of a funny commentary rather than a question about the actual rules:
The rules state that ONLY influence can be "traded", so why even use the term "trade", since they are all the same? (I find myself thinking of games like Settlers of Catan where there are multiple types of resource cards.) Why not just say something like "bribe using influence tokens" or "give influence to an ally"? Otherwise, we are left with this scenario:
Joe: "Hey, John, can I have three of your influence tokens for three of mine?"
John: "Sure. I like your tokens better than mine."
[Joe and John swap their three influence tokens, while all other players stare at the two of them, perplexed.]