Best quest strategy: Quest twice. Regen. Repeat. Only if you're an obsessive player who's on most of the day. Otherwise you can go a little farther. But by far the best is just two.
#46 "a cold spell" gives you 10mil gold and 3 xtals, it doesn't show on your chart, but great job!
It's not gonna be like these quests. For one, you get a crapload more money. For two, they're clan things. It's not gonna be a button on the home screen. Rather, it will probably be in your clan page, possibly under the war tab. Unless devs are gonna make it so there's two different definitions for a game term, they're not gonna make them like quests.