How can we discuss the viability of public quests?

I have a blogging conundrum: I am very interested in MMORPGs in general, how they work or don't work, how they could be made better, and what features or design decisions are good or bad. Thus I would very much like to discuss the viability of public quests in level-based games. The inherent problem I see in this feature is that people "outlevel" zones, and with time lower-level zones become underpopulated, leading to there not being enough players around for the public quests. The problem is th

World of Warkraft...