I don't understand, the previous icon style is already fine. I'm not saying that the artist did a bad job, the new icon is just not "fitting" in a sense. The character sprite art style and the icon doesn't goes well together, since the art style are different. I don't think that anyone has trouble with the previous style, so please, consider changing it back. Thank you.
Edit 1: Or just like Swertzo in this comment section suggested: having an option to switch between the older sprite and the new one. I had asked my friend about the sprite and he said that the new one is to his liking, so having an option would be best for both sides.