Right now, my main gripe with combat is how you often get ambushed by an enemy that you can’t even see yet due to the isometric camera. Often I get one of the big axe wielders just jump suddenly or a bomb get thrown at me from an enemy that is still offscreen.
Perhaps a more audio cue or maybe the corner of your screen slightly turning red to indicate danger coming up could help with this. Maybe even implementing an FOV slider to the camera, so we could zoom out. Or making the R joystick be a slightly panable camera, so you could slide the camera a bit.