Fantasy is a cornerstone of our gaming, and it is something that I have thought about a lot. Most of my ideas have revolved around trying to smoosh D&D into a Fudge paradigm, and that just doesn't work. There is a Fudge build for fantasy (it originally appeared in the Fudge Expanded Edition rules put out by Grey Ghost, but it is derived by Steffan O'Sullivan's 5-Point Fudge variant). I like it, but I want something a bit lighter and less traditional.
If you haven't looked at the Fudge: ASCB page yet, you might want to now. The terminology will make more sense.
Aptitudes
What D&D calls classes (Fighter, Thief, Magic-User, Cleric, etc.) we will use what ASCB called Aptitudes. These aptitudes will handle the basics of what classes do in broad strokes. A Fighter fighting. A Thief stealing. A Magic-user using magic. A Cleric smiting divinely. The broadest applications of these things will be your character's aptitudes. These are ranked on the standard Fudge attribute ladder. There will be more than the basic four, because otherwise it will be hard to make characters look different. I think Bard will be needed. Outside of that....I don't entirely know yet. I still don't want a straight up D&D knockoff. We've already got D&D and it does what it does just fine.
Specialties
These are like aptitudes, but more specific and they help clarify the exact abilities that your aptitude gives you. They also help set apart characters, so that one character who has the Fighter/Cleric combination of aptitudes can look different from another one. They are player defined, so that will take care of most of that, but I do want samples. Combat maneuvers, for example. I think my posts on Old School Clerics and Fighters will help with making some predetermined Specialties.
Cultures
This is an easy one. Basically what other games call races will be cultures in this hack. The nice thing about that is that it is also easy to make Cultures into cultures if you're interested in a more human-centric game, like something inspired by REH. But for most, Elves and Dwarves and all of those things will fit neatly into a Culture.Backgrounds
This represents your character's place within their culture. In many cases it is an occupation, or something like that, but in the case of this hack I am going to imagine it as who your character was before they started on the adventuring lifestyle.
There will be other things, of course, like magic to worry about, but I already have some ideas on that. I am looking forward to fleshing out some of these ideas here on the blog.