My group's situation is kind of similar, I'm on a group that has dropped activity from 400+ to 250. There are a total of 5 groups active in war, there used to be 9 when our server got merged, but activity has decreased so much 3 out of 5 are literally trying to survive.Three of them have 331, 329 and 250 activity, the top 2 have 888 and 557. In a few more months only 2 will remain for certain but I'm not sure if asking for another merge is viable for us, seeing so many servers need merge. I say stay until your group can participate in GNW no more. Farm packs as much as possible and then when it's impossible to participate merge with another group.