There's a major misconception going on here that I just want to point out.
Many people seem to be thinking of the room checks as another guest service that the resort provides, like housekeeping or bell services. You don't like the way it's been implemented, you want to tell the resort how to make it better, you want the resort to standardize it and tell you all about how it will happen and when and what they'll be doing in your room and what they're looking for, you want them to adjust it to your vacation needs. Which makes absolutely perfect sense if you're talking about, say, housekeeping.
The room checks are not a guest service. They're a security measure. Think of them in terms of the checks that take place as you enter a theme park. Like the room checks, Disney tells you that a check will be taking place (the bag check). But there's a lot happening as you enter the park that they don't tell you about. And they're not going to tell you about those measures, or tell you what/who they're looking for, or when they're doing it, and they're certainly not going to standardize and publish their methods, or change them to suit an individual guest's taste.
I don't have inside information, but IMO, the random way these checks are conducted is intentional. It's a feature, not a bug. If they become too predictable, they're more convenient for the guest, sure, but much less useful as a security measure. They're not convenient, they're not supposed to be convenient, they're never going to be convenient. That's kind of the point. The way the checks are happening is being dictated by the lawyers, insurers, or law enforcement agency that is compelling Disney to do them, and guests and resort staff are going to have very, very limited say in how they're conducted.
None of this will make you like the checks any better, and that's fine. But it might save some effort trying to get Disney to "fix" something that from their point of view, is working as they intended it to. That's time better spent deciding how, or if, this situation will change your vacation plans.