Alicornutopia

I assume skykin hybrids turn into *one* of the things their parents can turn into, and you're not gonna get starspeaker/sunwalkers with griffonish things?

"One" is possible. "Both" is possible. "Griffon" is not possible.

I think I'm okay with the dietary imbalance.

Why sky-kin get weather? How about emotions? Sadness (Star), Rage (moon) and Joy (Sun).

Well, weather is related to the sky.

But now I'm leaning away from weather and toward light-based effects. It seems more thematic.

There's another five for you: Joy, Sadness, Fear, Anger, Disgust. The five basic emotions of Inside Out.

And other models, which previously included Surprise before realizing it was close to Fear. I didn’t include them because it seems like that list isn’t really closed, but then again neither are the 4 elementals a closed list.

DanielH wrote:Surprise [...] close to Fear.

Wow, neurotypicals are weird. ;P

It doesn’t feel much like fear from the inside (for me or most other people, I think), but it has similar physiological effects. And that’s about as much as I know about the issue except from the inside, so there’s a pretty big chance whatever I’ve heard has been discredited or was never the major theory anyway.

So... Starspeakers would get sparkles?

Five Platonic solids...

Starspeakers may or may not get something you could reasonably describe as sparkles.