There are a few boneheads within the company and elsewhere who think that something being based on a movie franchise makes it fit in Hollywood Studios, no more questions asked. They would tell you with a straight face that the theme of Galaxy's Edge is Star Wars. Then when you ask them what the theme of any movie (such as any Star Wars movie) is, they'd have no clue how to respond.
Themes are ideas, not franchise names. A surrounding Cars land wouldn't necessarily make this show fit in Hollywood Studios, but a storyline that reflects the theme of the park certainly would. The people designing MMRR seem to understand to an extent. I hope this show, which is being created from a relatively fresh slate and applicable property, is designed with that same basic understanding.
First and foremost I'm glad that this appears an addition rather than a replacement.