User blog comment:An Advocate for Manga/Scaling of Ratings (for both Investigators and Ghouls)/@comment-26841482-20151016145333/@comment-27078917-20151016164658

Related to one Ghoul, I agree with you, there could be a Kagune Skill category that is made of Artistry and Imagination, but I guess the scales are general, for all Ghouls / Investigators and I don't think that there is an average Imagination or Artistry level considering the Kagune.