Diablo III's endgame is fundamentally flawed

Diablo III was arguably the biggest online game release of the year, but its predecessor's decade of consistent popularity left some pretty big shoes to fill. Despite being the most pre-ordered PC game in history and selling more than 6.3 million units in its first week, Diablo III has started to seriously wane in popularity. I've seen over a dozen friends stop playing completely in the last few months, and Xfire's usage stats for D3 have dropped by around 90% since June. Guild Wars 2's timely release accounts for some of the drop, but there's a lot more going on than just competition.