(I also have to admit, I'd thought that writing up the arcanist, especially with the variant spell lists, would satisfy the notion. No such luck, it seems.)
Now, I'm certain that at this point there are screams of agony at the very idea ;3 But Final Fantasy is so stunningly (A)D&D-like in the original game, it continues to amaze me. You pick your classes (Fighter, Black Belt, Thief, or White [*coughClericcough*], Red or Black [*coughMagic-Usercough*] Mage), for your four-man party, and set off across the lands scouring monsters from dungeons, claiming artefacts, saving princesses -- and, might I point out, kicking the arse of Chaos. Literally.
If you get party members slaughtered, you take them to a temple to be brought back to life -- or cast a ressurection magic, if you're high enough level. You find nifty magical items. And the first plague of monsters on your pathetic tyro heads are Goblins.
You even get a new class title and nifty privilege after you pass a certain level and talk to a king for whom you had performed a great quest (granted it's Bahamut. but that's part of the appeal to me). Look, Name level! ;D
So, yes, I'm tempted. Nyah.
*ducks flying bricks*
What would this kitbashing involve? That, I haven't decided yet. I have all the classes I would need (if I added the RC Mystic to my Red Box-ness); really, it would basically be writing up critters and spells and maybe a few magic items. I don't think I'd want to actually write a gazetteer of the world
On the other hand, too much inspiration and emulating and I'll be right out of Red Box land -- more and more of the unique FF critters and such are higher level -- and I don't want to do that quite yet. It is a quandry, I must say. I could conceivably make notes of changes in appearance or tweaking of stats of extant D&D critters, based loosely on FF. But that's just one option.
It's also a completely honest statement that, arguably, FF is so clearly based on (A)D&D right down to mind flayers, mariliths, Bahamut and Tiamat that an "emulation" of that first game is essentially pointless to begin with.
That's also probably true -- but I'm still tempted ;3