Pitching a couple more flags:
Revolutionary Countries: Used the colors of the flag of Gran Colombia, the country the liberator of the Spanish colonies in South America, Simon Bolivar, ruled. Hugo Chavez, for instance, sees his socialist revolution as a continuation of Bolivar's struggle, and I'm postulating so would the modern revolutionary countries (besides incorporating former non-Spanish colonies).
Commonwealth of Oceania: I tried something that moved away from the seven pointed star, as that's largely exclusively Australian. The globe is from the original commonwealth flag, as is the blue partial circle, which represents the Pacific and Indian Oceans. The southern cross gets used by a couple other Oceanian flags, so I included that as well.
Greater European Union: I basically used the same design as the previous one except that the stars are centered again and the colors are the official ones, because the others were off, as someone noticed.
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