So, now Monk/Dragoon have to compete with yet another class?

[lololink]

There would still be 2 offensive caster while with Ninja, there will be 3 melees.

It depends on fights actually, against T4 for instance the best was to have 1 bard ( they need to add another class that can give regen to prevent bards to be a must have ) 1 melee and 2 mages so there was no room for 2 melees, now for T7 it's better to have only 2 ranged DD to predict the fireballs and so having 2 melee, the brd and a mage, makes one of the mage less desired.