how about just add every online game that's released to date?
Warhammer - Overloaded servers, class balance issues which removed 4 classes. 6 months later STILL no Main Cities except for Chaos and Empire.
World of Warcraft - Horrible AI. Disgusting Class Balance issues. Unfinished zones and loot tables.
Shadowbane - Really. The only redeeming quality this game had was it eventually became free.
Everquest I AND II - Sluggy servers, horrible graphic issues. Overloaded on both releases.
Star Wars: Galaxies - Actually. Scratch anything released by Sony. All their release dates were basically met with the same underplanning and low expectations and lack of stress testing across all their games and servers. You basically paid to beta their games for a year after release.