I too have waited up to 4 hours for certain fates. The ones you need are almost always the ones that rarely appear, while the ones that nobody needs will appear several times over in the same time frame. Why aren't all fates treated equally with the same frequency? By making certain fates a rare occurrence, it seems like they are telling us not to do them. People who have less time than I do to play can surely not even participate, unless by chance they happen to online during those handful of minutes in the day when the fate they need is randomly available.