I know people hated it , but i think of all classes ffxi had, compared to the rest of mmos i played. the most unique one was NIN.

I never had as much fun as tanking something incredible hard on nin with a haste build, not eva build.Hell even with pld 75 personally i found nin to be incredible fun.I played quite a lot of mmos and im yet to find a class similar to NIN.The game play was seriously fun.