I don't know where you get "magically gained another ally" from As i said the outcasts have always viewed the Keepers/Nomads with reverence and treated them with respect. From what i have read the Keepers view the outcasts as pawns to be used for their own ends. If their ends include killing corsairs why should the outcasts have a problem with that. The corsair surely were not above allying with the Harvesters for a raid on Alpha now were they. Yes there was RP behind it just as there is RP behind the Keeper/Outcast neutrality/alliance.
Fortunate bystanders we may be but if corsair have been killing nomads then eventually the keepers would take notice and act. I would ask how many corsairs actively harvest nomads to sell the stuff gained for a huge profit to fund their ships and other stuff. I am not saying it is wrong just that eventually the keepers would take note of it and react.
