Traitors! Interesting, who was it that had brought up the idea a while back, Belac? Nice to see it being implemented. Though theoretically any player in a team game could sell out his friends, at least he now has an incentive to do so (I guess it is winning with the other team). Intrigue and espionage.

Aside from providing info, the mole would otherwise have to take no action that could be deemed harmful to his team lest he be suspected/discovered and attacked by his host team, I assume, until the time is right. I suppose if a captain were willing to sacrifice a huge number of points on pretender design, this captain could buy the loyalty of at least one mole on each team giving them intel on the strategies/moves of all opposing teams. And buying 4 allied nations as well.
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IMPERATOR·CAESAR·LVCIVS·SEPTIMIVS·SEVERVS·PERTINAX·AVGVSTVS·PIVS
Be harmonious, enrich the soldiers, and scorn all other men.
-Emperor Septimius Severus, to his sons shortly before his death, quoted in Dio Cassius (77.15.2).