Toon Generations Questions

I must say, i never tried mixing models from different generation before by using those X model for Y generation ressource pack. I usualy try to stick to models made for it's own generation. This is why when i make my toon character, i stick to Generation 2.

Between Girl 6, Callie 6, Aiko 6, Keiko 6 and all their sub models with a few here and there stand alone out-of-road toon model made for G2, i can mix them and usualy be able to shape the toon character i like/want. And with the classic body morph (Head, chest, breast, waist,hips, legs, ect...ect..) i can just toy and polish a little more some body part to my liking.

This is how i personnaly do it for me anyway.

So as for G8, i don't know. I assume you can also mix bodies from different toon character made for that generation.
Just select your Gen8 character, then go into Parameter tab (or shaping, but i prefer to use the parameter tab) and then to "actor" and them "people" and you'll have a list of the base body morph of your different character installed for that generation.
Just use the slider then and try it out.
Just keep in mind though the more "body morph" you add to a base character, the more it can possibly be deformed. Personnaly, i usualy stick to two or sometime 3 body morph. (which they are not all to 100% usualy.) I choose those who are closer to what i have in mind for that character. Then i finalize the morphing with the classic body part morph.

I won't do a list here, but although Gen8 is still fairly new, they already made a few "toon" and "half-toon" character for that generation. So i would suggest you take a look, maybe you'll find a character already close to what you want to do. If you really want a few suggestion though, you'll have to tell us what you want to do.