And here's why I don't talk much about setting here - setting is peculiar to the game, while System can be abstracted and borrowed, amplified, tweaked, extended, and components used in a variety of ways with other games. I posted a huge setting exposition yesterday concerning Outremer, but no one commented, asked a question, or made a suggestion - and this is typical when I talk about a Setting.
Setting somehow "belongs" to the designer in a way that system doesn't - and this is true even for copyright purposes. You can legally take mechanics you didn't create, and, so long as you express them differently, use them as you like. If settings are too much alike, you can have real problems.
So the setting "belongs' to the designer, to be accepted or not as is. When I talk about settings, I'm flying blind. I'm not getting any echoes. I just have to go with my gut, which I've been doing all along. This blogging format does me no good. With System, I get return, feedback. It belongs to everyone, and everyone feels they can comment. That rocks! It's a totally different feel.
So there you go, Bill, Mr. Setting! Why I don't talk about settings.