I posted this message in the general topic, but it seems to be better here:
Instead of RO castles, could be made temples dedicated to the goddesses. The temple is conquered by the Guild that maintains more people in the statue of the goddess during X time.
-After that, the temples would always remain closed all day, except when the guild that maintains the temple is “praying” to the goddess,so the temple opens to all.
-When the guild is praying to the goddesses, the guild obtain “loads/points”. These points serves to obtain the rewards of the goddesses (the chests of WoE’s). More praying, more “points”.
-You can use the points/loads to improve temple defenses, open areas that were previously inaccessible, obtain materials, open exclusive dungeons, etc.
-In the period that guild is praying, the castle remains open at least 1-2 hours, time that everyone can go to attack and conquer it. The guild that mantains the temple needs to distribute the members in defense of the castle or to pray. The more members praying, the more points you get in the same period of time, but more risk to defend the temple.
-Each castle has a different rewards according to the goddess (special dresses, flags with guild logo in the cities, etc).
It’s similar a War of Emperium adapted to a style of Tree of Savior.
Some skills can be disabled or limited. For example capping barriers, damage reduced, etc
Sorry for my poor english.