After many months we can say it has been a failure, and not is because is not a good content, is because fails in points that can be easily fixed...

First of all, location:
Papua Crinea is settled in a isle in the farthest western part of the map, is really hard to reach it if something happens there.
So, if a brink of war happens can happens 3 things:
- You have an stationary character here only for that. (Nobody want that)
- You can run for it if you are around (less than the 5% of the players can do it, and 0.1% can be interested)
- You can't reach it in time so you ignore the "event".

How we can be fix that?
A teleport like Red Battlefield or the horse races... or continue reading...

Second, the Brink of War:
Random server, at random hour. So... if someone was still interested, they are probably not at the moment, or on that server, and will have no way of knowing.
That can be easily fixed with a fixed server for it like the horse races, and fixed hours to let every player interested be there in time like in the world bosses.

Third, Crabs:
Right now, and with the before listed problems... is hard if not imposible to beat that crabs alone so... players desists to do it.
As we see in the Shai Trailer, there exist a fight against the leaders of the faction (Papua Queen Crab), but this not ended in the game... 
Why not implement it as a Wandering Boss like Red Nose or Dastard Bheg?

Timestamp at 1:47

Fourth, Rewards:
Maximum exchangeable coins rewarded per missions, per day:
2+1+1+1+1+1 = 7 (That if we count fishing and bartering quests)
And the rewards ask for almost 350 per scroll... Almost 50 days for 1 scroll....
The other rewards, an item to craft donkey gear (100 per piece), and dry fish.

I'm a Shai, and is ok for me, but most of the player base don't need donkey gear...
In that case, why not to add something for them?