Whether or not you feel that Aurvandil's remaining players should pay a big price or whether they're innocent bystanders, the fact is that they're probably going to play a moderate price and possibly a big one. It won't take a Zuma invasion. Karma has a way of evening out in cases like these.
They lost a bulk of their realm and now the continent hates them even more than before, which is kinda saying a lot. I wouldn't be surprised if they evaporated off the face of Dwilight.
