It might be worth adding this as a line at the beginning of the Readme.md
Are there build notes detailing the changes made to the standard raspbian image? Many of the changes made are really good just for general raspbian images so would be good to document somewhere. I am presuming you have a build script you use?
I think there needs to be a recognition that not everyone wants to use a Pi just for Emoncms so constantly simply pushing that agenda can have a negative impact. Me, the pi that runs emoncms does a whole lot more as well, but I am really reluctant to upgrade from 9.2 as I suspect it will cause a whole load of angst.