After being inspired by the below video, I decided to make some slightly improved loading screens for Verruckt and Der Riese. I didn't do it for Shi No Numa because I couldn't think of anything (I guess I'm open to ideas), and Nacht Der Untoten doesn't need an improved loading screen.
 
https://www.youtube.com/watch?v=D8OeYIe878k
 
The guy made this, and then never uploaded it. So the verruckt loading screen I made is basically this. All credit to him for the idea, obviously. The Der Riese loading screen is the same idea, except for the sound it uses an unused audio file.
 
https://www.mediafire.com/file/ay7typxfabmukqq/loadscreens.rar/file
 
To install, copy the two .bik files, and paste them into your CoDWaW/main/video folder. It'll ask you if you want to overwrite the two existing files with matching names, choose yes. That's it.
 
Anyway, hope you guys enjoy it. Took me like a whole ass hour to figure out all these tools. Also, I have no idea if these work in co-op, and I'm inclined to say they won't since I think co-op maps use different load screens.