because areas dont have enough monster variety already. why have we not gotten a cap increase? why is many gears currently in game unreleased, why did they have dungeons in game since alpha unreleased? exactly how long do you think it takes to create content? game is coming on 9 months its been out. in 9 months of ffxi, they were like 2 months from an expansion, and the still added more to actual game then we have gotten here, by far.
http://zeusls.llima.net/download/ffxiupdatehistory.html
game came out without dlevel, different enimity, less classes, added jueno metalworks, northlands magic bursts, readjusted auto attack, balanced skills, added skills rebalances skills added tax, blah blah, they did way more in ffxi in less time is the point WAY more. they did just as much balancing of core algorithims, while releaseing content.