If you want the new map to have a push and pull mechanic similar to WvW.
Make the players to choose one of three or two factions (pact, Jormag, and Bengar).
Then you should make it so that players have the objective to push back the other enemy faction by attacking their lands and strongholds.
But the players cant attack any other players.
Players can only attack NPC of the enemy faction.
This would make a very fun and interesting map,. the best map you ever made.
Also the new mao Bjora is very good really, much better than the last winter map from episode 3.
Please repair the winter map from ep 3, its such a stupid mechanic, you have to run around with all of your chars, to get winterberries from the bushes. Thats a stupid mechanic, you solved that much much better with the new map Bjora.