It's because TLK6NA where published before SP, and Disney wasn't planning to create a sequel. Kopa's missing from SP because none of the staff there knew about those books.

Yumacub: To be honest I like your picture more than the actual screengrab. LOL
(Disney sequels fail at making close ups, they look extremely weird. XD)
Yeah, he could look like this, but I don't think he was old enough to have a hair tuft...
LT: I love his colours in this version. Look like in your version Kopa and Chaka are twins. ^^
But I guess I'll stick with this one. I wanna make a Shani version too, because Shani is brown, while Kiara is orange-to-dark golden. (Image not mine.)
