In my opinion, theming should always take a backseat to pure fun and a positive guest experience. If theming has made a majority of guests confused about where the bathrooms are, or if theming has been used to box yourself from using characters, concepts, places, or even time periods that guests want to experience above anything else, then theming has lost it's utitlity in your theme park land. The Potter lands we have currently understand this, Galaxy's Edge and Tiana's Bayou don't. It's how we got Star Wars Land without Mando or Darth Vader, and a PatF ride without Facilier.