Crezzy is right though. There are now (and have been for a while now) more castles than regularly active WoE guilds.
Payon 3 is the only castle that hasn't changed hands enough to have any econ.
So for the rest there are basically 2 results for how WoE runs.
Everyone runs around in circles taking each other castles while the owners are out taking some other castle (basically who can get the most, and how WoE goes in ygg)
or
Everyone works on a castle or two if the guild is strong enough. No one interacts becuase there's enough castles for all the WoE active guilds to camp individually.
Having woed on ygg for a bit when it was just released, I would say the opening of only a single castle resulted in a pretty fail WoE participation.
A continually losing guild/alliance could continually pay much supply costs to end up with nothing to recoup those costs. I understand that current iRO culture is that guild leaders are expected to give all the supplies, but when coming up with all those supplies (and the money/time to get them) becomes an overwhelming burden, they're going to stop paying for it, not to mention a possible low morale for little objectives achievement.
In my opinion, opening up more castles would be good to (firstly) increase the actual WoE population. Later down the road, more actual fighting could occur (e.g. full restaurant phenomena to attract even more customers).
