The 10% downhit thing does appear to have improved things... but we are still having cases of people simply downsizing all army, declaring, and then forting up and hitting someone who -can- be at times several hundred thousand nw smaller than them once they are forted to strike.
While i accept there is always some fluctuation with regards switching from defensive to offensive forts, people are obviously using this as a work around the new restrictions.
Perhaps basing the 10% difference upon the attackers nw from several hours ago would be more fitting? So that if they do wish to downsize and then declare, they have to accept the risk of being downsized for several hours prior to being able to make the hit, the declaration restrictions still noticing their previous higher nw for a number of hours...
Prince of The Hirudan Empire