There are three things that I think should be addressed with SCH.
Adloquim: While this spell is handy, it is much too slow to be of real use. 1 TP/tic is too slow for most situation, I feel, and that it could be more (such as 3 TP/tic). I will accept a reduction in how long the spell is on in exchange so that it will still be only 60 TP total, but I think it could be a bit faster.
Modus Veritas: This ability has been turned into a useful/useless ability. While it's useful against normal enemies, the ten minute timer greatly limits its use except for the big boss fights. However, against big bosses, the enemies that I want to use the ability on, it either misses entirely, or it has no effect. While I know why it was made the way it was, I think it's gone too far, and it's now in the category of useful/useless abilities. Please make it that so that Modus Veritas no longer misses or is resisted, but to avoid the situation of 18 Scholars one shotting AV, make it so that only one Modus is active at a time.
AoE Ability: One thing that SCH really lacks is an ability to massively kill enemies. While I can easily knock one or two fearsome foes single-handedly, I really don't have a way to kill even the weakest of enemies as effectively as other jobs. While I'm not suggesting that SCH should kill as easily as a BLM, but some sort of way to attack multiple enemies at once would be helpful.
Thanks for reading.