The US government would do much better to simply take this on the chin rather than throw their weight around. Most of the cables seem to be no more than mildly embarassing. Apart from the list of vital interests, I've seen nothing in the least bit surprising...
Even comments about UK troops not being up to the job - not a big surprise, not because UK troops are rubbish but because of who was speaking - I dare say similar comments have been made about US troops but those would not be in this list!
Even the list of vital interests is of little consequence - the primary enemy that might find this list interesting is Al Qaeda, and they are far more interested in killing people than attacking infrastructure, etc. They may change, but I very much doubt it - that would go against the nature of the beast.