The fact that these dungeons aren't randomized is one of the differences between EverQuest's implementation of a mission generator and how other, similar games have done it already. Another difference is that EverQuest's missions are available only to groups of four or more players. EverQuest has never been a game to really endorse solo play, though some of the character classes have always been viable on their own. Those who prefer soloing simply will not be able to accept any of the lost dungeon adventures unless they find a group, though.