Alright, we all know the castles, keeps, and camps of WvW backwards. How about change them up?
A) Make the structures different. Have the East keep Azura built, middle Char and West Sylvari or something.
B) Add more vertical gameplay. Think of Castles towering upwards, inter-tower bridges with 100 foot drops.
C) What if there was a mosh pit in the middle of the map. Npcs would spawn at each keep and auto-attack to the middle, sorta like in Dota. The fight could be altered by upgrading the npcs, picking them off, even taking a keep and spawning more from there. Like that theere could be more than just zergs to pose a threat. Solo players could find a use as well.