Hi ^^
A friend and me are planning to unlock these jobs, so if you'd like to unlokc them too, post/PM/tell ^^ !
There are some difficulties we have to get through :
Dragoon : a Lv40 Dragon to /slap
Samuraï : a Lv33 Bomb to /kick
Ninja : 3 leeches IT+ for a Lv30 to /crush
(We're also planning to unlock a few others advanced jobs, and I'll be glad to help with Sneak/Invis if you want to unlock some jobs like BST and PLD.)