I think its really important to provide more quests in the game. There have been several times between skills when I was finished with all my quests. I know there is plenty to do in game, but each person likes to play differently. I happen to be the type of player who prefers to do quests as opposed to gathering, collecting, mining, money making, etc. I think a good way to benefit the players is to provide more quests. Like quests that are not necessarily related to the skills that you learn, but just general quests. If people are already expressing boredom during testing stages, imagine how much bigger the problem will be when the game is released and people can play at any time. Providing a nearly unlimited number of quests throughout the game will attract many different types of players who might not be interested in playing the game otherwise.