Of course it's unbalanced, they've removed the stamina bar, the pace of battle has drastically slowed down. The patch for the battle fixes were released far too early, it's so incomplete that more than half the player base has noticed. And it's not just conjurers 'whining about their mp'.
It's like if anyone around here opens their mouth about Conjurers, they automatically assume it's mp related.
The reason there are so many Cons required now is A) yes, mp is kind of an issue especially with inadequate tanks/hate holding not working/increased damage over all etc. And B) Thaumaturges are no longer healers, at all, period. This is in my opinion, a disgrace! The whole addition of Curaga and Curaga II and making them Conjurer only has pigeon holed Conjurers into main-healing positions.

The uniqueness of these classes has been abolished, I haven't heard one thing about Pugs as tanks anymore. Has that been killed as well due to the speed of battle + hate adjustments? What liked about Tanaka's design was it allowed for the Gladiator to do DD as well as tank, and for the pug as well, and even archers as OP as they were could handle themselves alright, as could most other classes when played correctly.

I appreciate the focus being put on group play, but from early days of this patch all I can see is more of XI that I absolutely hated.