Need more mine locations:
Players have reached a big enough number that there is a substantial need for mining materials.
Especially lv 3 stuff mining materials, However there are too many miners and not enough mines.
Bigger problem: A single clan can control most of the mines and not sell any to anyone else preventing any other clans from completing lv 3 quests.(Or make them pay double rate which is just as bad)

Need to increase the mines in the game, possibly change the rules so that mines cant be stolen so easily.