Please make Guild Quest adventures random ones (perhaps based on player level). Not all of them need to be Island of the Pirates. The guild quests should not disrupt the market place by driving up the prices of a few items. The adventure quests also should not come up so often. Perhaps 10% of the guild will get an adventure quest.

Better yet, look at the adventures that a player has in the star menu and then pick one of those based on player level.