Let this work as it does now at War declare, but also recalculate this figure with every Out of War(OOW) hit.

-War declare is based on; Enemy KD NW : Own KD NW
---hits made inside the confines of War relations would not have further effect.

-Hits from War to outside KDs, as well as any other hits that are not into a KD you are at War with;
---will recalculate the 'Average Opponent Relative Size' figure based on; Target KD Avg NW : Own KD Avg NW



... or something like that