From a theme park perspective, yes they are viewed differently. But as a designer and a heavy follower of the design industry, thematic consistency and immersion are part of the same design principle, with thematic consistency being a pillar of immersion. It's about fully believing and embracing a design or an idea. For example, there are many buildings of the 20th century that went all out creating an elaborate exterior with neoclassical motifs, but walk inside and you couldn't tell it apart from an open-floor office building. They are considered eyesores for good reason. They're the pinnacle of hypocrisy. Getting even deeper into biology this time, the human mind is wired to notice things that don't belong, no matter how much is right. It's a characteristic of our nature that saves our lives regularly. In a theme park, the degree of immersion is how well it tells the story, and thematic consistency is therefore a vital part of immersion. Similar to virtually every theme park attraction, Big Thunder's story is fictional and fantasy. Tumbleweed, USA has never been a real place. Therefore, the ride isn't attempting to recreate the American Southwest during the 1800s, but instead realize the idealistic vision of the wild west. Back to the Potter coaster, just like all other themed coasters, the context of the ride is to tell a story, and skimping on thematic consistency damages its ability achieve its primary objective. For all the reasons above, I feel theming some bits and not others will only draw attention to the bare bits, and consequently their flaws.