I was thinking about utilizing AppGameKit in the new editor of Cerberus X which I am working on since January but I decided I will drop that thought as I can use other graphic apis.
AGK for Python was a natural thought as I am developing this editor with PyQT5. Our current editor is coded in C++ and QT but I love to develop in Python much more.
The productivity is much much better there. I am not buying in this AGKs as I think a new editor doesn't justify buying the same engine again!
Anyway, good luck with your projects, you are doing a great job there.