Yeah, I'm not sure I'd like the yarn.

Hm... I've never seen something like that done on a pony plush. I'd have to see it before I'm 100% certain. I think it's more the shape of the mane that's bothering me. If the overall shape doesn't look quite right, adding embroidery may not make much difference. And I do like the simplicity of having a plush-filled mane with no embroidery on it. It works well on this style of plush.

I have a soft spot for laying down plush because they remind me of the Ty Pillow Pals. I loved those when I was a kid.

Maybe make a poll on DA? Asking potential buyers outright could be taken the wrong way.