This would be a wonderful new category. Here are my thoughts.

You could add, as I have seen others suggest in the forums, totally new jobs like puppetmaster or something. Perhaps some sort of "Rune Knight" (or whatever you would call it) that was like Celes from FF6, or the Mystic Knight job from FFV.

You could rework "scouting" as melee magic. Ninja is very magical to start with.

I know this would not fly, but I would much prefer to see DRK as a melee magic dps, and reintroduce the HP-sacrificing damaging abilities that classic FF Dark Knights typically possess.

Just a thought.