Slightly related, but i would love to make customs based off of the doll lines they added characters to, such as a Getting Ghostly Jinafire, Power Ghouls Moanica, or Candy ghouls/ Sweet Screams Lagoona, Jinafire, Cleo...
Making customs of the Halloween ones or the Pattern ghouls could be fun and somewhat easy as well, and maybe with some outfit help the Space Monsters could be a reality as well!