I'm very afraid that with all of the complaints regarding expert difficulty, they will probably nerf it.
I find it to be the perfect difficulty in which I had to struggle early on and play very creatively at the beginning in order to get strong enough to be on equal footing with enemies.
It also makes me utilize the dodge system and think about spacing, attack timing, prep for certain battles, taking cover behind an object when a fireball is hurled at me, or running away to regroup or lead enemies into a trap when outnumbered, etc.
It feels like a daunting, but very winnable and satisfying RPG experience.