Eston's refusal to attack/betray Coria may however save/aid them in the future. Eston is not dead (and won't be) so only time will tell. But they have shown to be honourable and to honour their deals. They may very well outlive Darka and BoM.
This is also an important point.
Eston secured for themselves a strong potential ally in Coria. (Who is now stronger than Eston itself). Coria is also within the CE alliance, so while they aren't directly part of the terms discussion, they can advocate on behalf of Eston.
