Two biggest issues would be :

1) Loss of Titan as a tank has rendered this class nearly unusuable in the open world. I died to a FATE in Lakeland because I did one AOE spell and got all the agro and no way to heal. Titan's shield is useless. Physic is useless.

2) Way too many buttons! For AOE, you have 7 buttons : Outburst, Painflare, Bane, Deathflare, the AOE energy drain, Garuda's 2 Egi Assaults. That is just too many.