How about the Iriali and Alethi mix we have going on with Adolin and Renarin? Where would this put them within the chibi figures? I have always had a hard time trying to figure out how they would look like due to their mix ethnicity. I have ideas... of course, but I'd be great to have confirmation.
They're gong to have lighter skin, but skin tone isn't something Alethi pay much attention to. Hair and eye color is what draws their attention. Dalinar and Kaladin will be darker than Adolin and Renarin, though none of them would look Caucasian to us. Of course, Caucasians have varied skin tone as well, so it's hard to say specifically what they'd look like. (As a note, Renarin/Adolin are a Riran/Alethi mix--not exactly Iriali/Alethi, as there's some slightly different genetics going on there.)
Oh I thought Riran and Iriali were the same... Where did I go wrong?
I can't say much without giving spoilers, but there are small differences.
Would be cool if you ever got the chance to sit down with a sketch artist to put out images of your visualization of how some of these characters look.
It would be fun, though I've done this (in a small way) with Ben McSweeny, who does a lot of art for my books. I have semi-official character sketches I use for my own descriptive purposes, but I don't consider them close enough in some ways to be cannon, so we don't release them or put them in the books. That said, some of them might be floating around on the internet--I'm not sure.
One thing I wish I'd done was nudge Michael Whalen to push his Kaladin on the cover of Words of Radiance a little further to be a little more ethnically Alethi--as I think it would help people's visualizations of him. But the one we ended up with is already the third version of Kaladin he did for that painting, and each one was increasingly better--I felt bad pushing him further.
As a side note, I've always loved this fanart for Rock. I don't know if there's a more on-target picture of one of my characters out there: