Ghosts are their own separate characters rather than just a projection of the user's spirit, and they're used in a completely different way in fights.
I look forward to see how they will adapt some arcs later in the story.
Even among Yoh's allies, some spiritualists are formed through a strange sort of essentialism, such as Lyserg Diethel, a British medium who wishes to be a detective.
Tao Ren who is a character from shaman king is a Chinese shaman and has an British accent and the dub is alot more childish! I might be more fond of the characters due to the fact that I've experienced them while being young, but I still think their personalities were executed quite well and that their motivations are quite understandable.