lolwut? did you even play XI? All the expansion jobs from ToAu and onward were brilliantly done, SCH especially so. SCH was never "OP", only Embrava which did eventually get nerfed along with SMN's perfect defense.
SCH still couldn't match WHM or BLM on a per-point basis but beat both out handily in MP endurance while offering a lot of its own unique abilities and demanded arguably the most micro-management of any job in the game save possibly PUP - it was not a job for the lazy.
Both SCH and SMN feel like they can't figure out what they're supposed to be (as does BRD) with the bizarre mixture of roles and abilities. I'd much rather have the Light & Dark arts style back, and take away all the crap ACN spells for more summon commands that cost MP as a tradeoff for the increased power. There was really nothing wrong with SMN's design mechanically in XI other than avatars bled too much MP for the performance you got out of them.
