Even though I don’t work in an agency, I like this very much. Some further ideas:
I would find it very cool if the various projects for courses, videos, documentation etc. could coordinate with each other so the result is not a patchwork but homogenous learning and introduction material consisting of:
- course material
- videos
- exam (certification) notes and syllabus
- documentation on docs.typo3.org
- skilldisplay paths
- example extensions
- distributions e.g. as extensions or Docker / ddev containers (e.g. Introduction Package, “Developer package” etc.)
- etc.
This way, the learning material could be consistent.
If you make improving the documentation a part of your efforts you could also link and refer to documentation from the course and be sure it is consistent with what you are teaching.
Newcomers sometimes point out flaws in the documentation or things that are not well usable or unnnecessarily complicated. That could even be an ongoing process which would collect feedback from the new agencies and use it to improve things.