If your group is dominating the server I can understand the urge for new challenge.
But if your group don't then I think the merge bring more harm than good for your group. You got own everyweek by the strongest and expect the merge to fix that? No it won't. You still gonna get own by other stronger groups and expect your group rank, rewards to be reduce.
GNW do not decide your server status. As long as your sage battlefield can be done and 9tails can be kill your server is good to go.
The merge only fix problem for servers that can't start sage battlefield or can't manage to beat 9 tails because lack of players. Yes GNW maybe get improve after the merge but it's not prioritize, the only prioritize you guys should think about now is the cross servers pvp coming in the future. Collect your resource as much as you can and prepare for that.
Players in dead servers can't collect their resource that's why the merge come and help them. If you're collecting your resource easily then stop asking for that, don't bring GNW into this.