Great to see that there are now also 3rd party MiniVan PCBs. There are already 3rd party MiniVan cases out there (Keyboardbelle, StrataKB — none of them seems to be open source though — yet).
Apropos, it would be nice if you could add a license declaration (e.g. by adding a file called LICENSE or LICENSE.md) to your GitHub repo. Github’s Choose A License service might help if you’re unsure what license is best for you.