On the contrary I think it is quite good. Esma damage is not to be taken lightly in PvM, considering WW and all. Wide assortment of defensive / escape abilities make it hard to kill in any area of game play. Always useful for supportive link buffs in practically any group situation.
Only area the class really lacks in is melee DPS. However where it lacks in damage, it makes up for with attrition in comparison to majority of classes.
I don't see how it's considered a bad class at all.