I think the best plans i have seen is that the rewards are shared with the clan, if you want to give the people like 10% for doing the quest fine so they do one worth 50 gold, 50 gold goes to all clan members and they get 5 or a system like that.
Also I do beleive there should have been 30 quests from the start and a 1 quest per person limit per day so everyone has a chance to get a quest without the leaders having to micro manage something that is spouse to be for fun.
Right now they way it is setup whoever can cherry pick all the good quests when the timer starts, like me who was asleep did not get any quests so no clan gold for me.
I really do not like the excuse that they put out that they did it this way so clans would talk to each other more.
I am sorry I do not play single player games to be a social butterfly =)
I have not said a word in my clan in the 4 months I have been in it and most likely never will.