This is great, Garfield. Very similar to the layout that I unconsciously ended up with in many ways. And I agree that this is an excellent primer for beginners in the types of necessary modules and functional grouping that should be considered when planning a larger rack.
I've been making some small tweaks to my layout, and even removed a few modules that weren't seeing any use (gasp Goodbye Clouds!). I've come to the conclusion that I will probably never finish tweaking it, as my needs change and I embark on different kinds of projects.
Thanks for putting this image together for us to consider. Have a great week.