I have a few:

SCH - Terrible. The nerfs were devastating and the class feels disjointed with too much reliance on a pet that acts, at best, unreliably. Manipulating your pet is like playing on a permenant delay.

SMN - Weak. Compared to what disgusting numbers I have seen others put up, SMN just does not cut it DPS wise.

AST - Godlike. AST literally has a tool for almost every single situation and if you time CO and LD you have nearly infinite mana. Will likely be Noct AST/WHM in progression.