I know your pain -- things like this get long fast, and it's hard to include everything all at once without going on forever. I would definitely appreciate implementing some background off of each item!

Another thing that might help is knowing about services or open source solutions that can bundle a lot of the checklist together. Heroku might be a paid one, for example, but there might be things like ansible scripts out there that do a lot of this from security professionals, I'd love to know how to be able to package a lot of these checklist items together more easier.