I think it would be helpful to do a course about the differences between 2.79 and 2. 8 (when the official version comes out), because there are plenty. And I think beginners will be pretty confused about stuff that’s missing, stuff that’s in a different place, hot keys that are changed, etc. I know I am! I imagine it will take you guys a pretty long time to update all the courses so perhaps a short ‘watch this first’ course on this will be a good start.
Also, when 2.8 comes out I would like a rendering course for eevee 🙂 and maybe something about when best to use eevee and when best to use cycles.