All feedback is of course to be taken or left as people see fit, because it's your project.
The reason I am very caught up on ordering of information is that I'm a news editor by profession, and news is of course all about ordering of information so people get the most clarity as quickly as possible even if they're only skimming. You're right that most of these issues won't hurt usability in the long run, but I'm big on reducing friction the first time someone looks at something.
Personally, I think it's possible to "have your cake and eat it too" when it comes to this stuff. It's entirely possible for a module to be easy to read sequentially and also to use at game time. For instance, with the interior spread I'm not saying don't put the descriptions next to the room images. I'm saying change the background so it looks like all one spread not three separate panels. The problem is the visual division between the descriptions and the images, which makes the descriptions seem like they're in a weird order until you realize they're next to the corresponding images. If they were visually connected to the images instead of separated from them, then it would be obvious at a glance that they go together.
