I've begun to work through these installations and test them out. I think these are terrific, and thanks for all of this, @paulhibbitts!
There is a lot to work through, and I'm trying to carefully evaluate these. One quick observation, for now:
If you follow the .zip upload and extract workflow, your Grav CMS does not show up within your 'My Apps' area of the cpanel. At least it hasn't for me, yet. Also, this process necessitates a subdirectory. I have been installing within a subdomain, and moving the directory's contents up one level breaks the admin login.
The Grav install through the installatron gives a dropdown for a handful of Grav skeleton packages. Could these all (OER, OER with Git Link, Course Hub, Course Hub with Git Link, etc.) be added to that dropdown?
I think this is really exciting stuff.