What about templates?
Like, from what I have seen in my time here and Acmlm and from what I have heard among my friends, it seems that people who want to do hard core hacking start off with Final Fantasy. But what if we made it easier for the weekend warrior variety by making specific genres of hacks for FF alone. For instance, making a western template would involve a gunman, a (bar)wench, a lady(of the night), an indian, a doctor and a chinaman. And no, none of this is meant to be racist or anything, but I'm going with your age old western genre. Swords are made into guns, heavy swords (the kinds only fighters and knights and red wizards can use) become rifles. Knives and axes change just enough to be like knives and tomahawks, and we can just take out stuff like hammers and those things to put in whips and whatnot.
And there could be a Samurai template. A Ronin, bandit, monk, ninja... etc. All the monsters can be from Japanese lore, and become stronger all the way up until like... I dunno a whole lot about Japanese lore, but you get the idea.
Atlantian, were you're mostly the same adventure, except that the cities or towns could be across depths that a Merperson can't swim on their own, things like that.
Cyberpunk, like making it so that more items (computers) lead into dungeons where you need to jack in to go online and whatever.
Hell, alien invasion, ninjas, pirates (that one would be fun, I bet you.) Caturday, the internet. I bet any game on the planet could be made out of FF. I had a thought for the internet one. The enemies could be a series of memes, ending with the all powerful Longcat, and the super powerful sword can instead be Tacgnol, and so on and so forth.