How a player faction excludes a characteristic of the NPC faction

[casero]

So sorry for talking about the outcasts again, if I didn't get it wrong, they weakness is the cardamine adiction (cardamine that they produce in they very own planet) and the low birth ratio they have, however thanks to the cardamine they live longer which makes they don't going to extintion.

So, what's their weakness again? xD

So far, it doesn't look like Outcasts need of the zoners the same as the corsairs are supposed to.

The arguements exposed here were: Without zoners providing food, the corsairs will starve to death.
Without the cardamine that the outcasts produce in their own planet, they would die.

So sorry if I keep asking, but I bet there's another weakness that the outcasts can't solve by themselves. Jameson, this thread is not about Corsairs/zoners (If I got the title right), so don't be affraid of sharing your knowledge about the OCs with the rest of us.