Well, I was hoping that I'd get some responses to my last inquiry, but I guess not many people were interested in the subject. Moving on, then.
Working on the Terra Ultima setting, I think that I'm going to strip down more than just the rules (I'll be starting from a base of Swords & Wizardry: Whitebox and a few basic house rules, which I'll go over soon, since my ideas have changed from my first essay at the idea). Instead of working up details of the base city, I'll just build the first couple of levels of the campaign tentpole. This will be a megadungeon in the classic sense, an underground complex of tunnels and levels populated with hazards and creatures. I'm not completely sure what the concept will be, but I am leaning toward a ruin topping a hill that is really the built-over remains of layers of cities, like Troy.
I dunno, I guess I just don't have a lot to say right now.