personally i think SAM is really fun in AOE,
especially when you turn into a blender Kyuten but adding separate AOE buttons are unneeded like a AOE yukikaze was not needed AOE shoha could have been upgraded to AOE from regular,
they upgraded spirits within and gave it AOE not sure why they couldnt do it for other jobs and it probably be much more interesting give buttons we use all the time a new animation then another button only for dungeons.