Right, because the Chimera battle looks so much more challenging since it rewards static position for all minus the tank.
So lets recap...

Before spellcast movement - Battles such as Ifrit that forces you to move as eruptions can happen anywhere on the map.
After spellcast movement - Battles such as Chimera whose equivalent of eruptions/plume are static on the map.
http://www.youtube.com/watch?v=QWmKi...layer_embedded

If you consider content based staying in one space to cast spells, you are delusional.