I'd love for something like this. They got easily give this to the Bard job.

After reading what their view was on spellcasting, I couldn't see them making a class that just focuses on buffing/debuffing. So in this case, they'd have to make these attacks really strong and do something other than just buffing a friend.

I was almost getting a vibe from Final Fantasy Advanced Tactics 2. The spellblade would imbue her attacks with a debuff. Like she would cover her sword in oil and "oil" down the target, which would make them extremely weak to the next fire based attack. Or she would slow them, put them to sleep, poison them. You catch my drift. It would be a great way to bring in a DD debuffer class.