I think you're on the right track.
I broached the subject in this "Opinions on DCC RPG Alignment
" thread I started a while back.
As I mentioned there, I'm a big fan of history, and when I think of the great campaigns (England vs. France, Crusaders vs. Saladin, even Colonial American vs. King George's England), "good vs. evil" really becomes your perspective on those whose ideals conflict with your own ideals. Both sides could be lawful/chaotic or something in-between. I'm going to try to explore things like "Lawful-Kingdom A sympathizer" as an example.
I don't have the book in front of me, but I remember there was a passage in "The Temple of Elemental Evil" where Gygax wrote something to the effect of, "the folks in the temple want to see a world dominated by the elemental gods and therefore, from a humanocentric point of view, are evil." That phrase of a "humanocentric point of view" has always stuck with me.
In the current adventure I'm writing I'm going to be exploring the use of politics in the adventure more-so than I have in any of my past games. I'm hoping briefly describing the motives of characters/critters in any given situation will help make the game play more enjoyable. Worst case scenario, the Judge can ignore all those "Background and Motivations" fluff sections I'm writing