the idea of having a theme name for capsule is great! Very much like a style moniker. Great for focus, as in, would I wear this in my Africa capsule mode?
I have a sugar eye for some elements of "safari" as well as military, usually because of fit and fabrics. Safari-type jackets are usually longer and have some waist fit, which is better on me than moto's or cropped jackets, except with some skirts; often are in cotton or linen blends. My usual limiting factor there is that they are in very warm tones or are too casual.
Also love "camp shirts" and epaulets, that sort of thing.
So I do keep my eye out for items with these vibes but with the right colors and degree of polish, and would typically use one item of that nature while keeping everything else classic or simple.
Sometimes rather than "ethnic" I think "natural" as I like summertime jewelry with themes of shell, wood, and in lighter colors to summerize darker colored tops. It can be hard to find things that look right, not tacky or touristy or whatever.
I like your WIW and think it really fits that--the knitted top is the statement and the other pieces are simple and supporting.