Just a suggestion that I think would be nice; since every WoE castle are made very differently and all require different defense strategy, and we had those 4 since the beginning, closing them and opening one or more new ones (still 1 per map) would make a nice fresh change.
You'd need to own a castle before you can enter the guild dungeon anak, if we did that, We'd need all of the castles unlocked, so we can have a second WoE with PVP inside the dungeons where the monsters are for the guilds that already own a castle. It'd be tough because it's not just the players you gotta worry about but the monsters too.
Lets see them pallies tank dark lord while the sins go after the emp
but where would the emp spawn in there? And how would you make it boot out the other guilds after it's taken? What would be the point of this 2nd WoE in between the Town castles aside from fun, they don't have NPC's for Eco in the dungeons, so there'd be no drops.
There's so many questions that'd need to be answered with a thing like that anak