I am very fond of seeing a neutral race or series of playable races being added to the game. With this they could add faction-based tradeskills. Then the neutral factions who somehow loose territory control, could be the traders in the game. They risk their hides to trade the essential goods and services within the game. Borderline privateers, and black market traders they could bring so much into the games economy and warring faction ideal.
AO had a system that was suppose to be just like this, though it never panned out. In every great war there are neutral agencies who make their livelihood by moving items across the battlefield, I highly anticipate the opportunity to join this element if they implement it in an expansion. The sheer fun of knowing you have to walk right into a hostile town, not knowing if you’re going to be killed on sight or treated like a hero just for showing up. This also adds the vast elements of espionage to the game, for the merchant always makes the best spy.
Anyway I have no idea about Panderans in game now. I never ventured into towns much during stress test. I was too busy running around and dying trying to see everything out in the world. I would suspect they would come into play though, as the Naga have already been found in places.