I just don't understand why they can't at least give them the same MP pool a SCH has. I somewhat understand it's because giving PIE to Caster gear would only buff BLM even more, and splitting gear for BLM and SMN would be even worse especially in Coil, because it's already a pain with the MNK/NIN split, and of course the already overburdened Armoury Chest space. Just giving PIE to their weapons would probably solve it, granted it would need really huge amounts of PIE just to get to SCH levels.

The whole ACN/SCH/SMN deal was just badly implemented, shoving a DoT class into the planned magical trap class and then shoving a pet into it and splitting that again into a healer. SMN and SCH should have been standalone right from the start, if anything Astrologian would have made more sense to come from ACN due to the geometrical nature of their spells and navigation aspect of Limsa. Hopefully this will be addressed in Heavensward.