Thanks Callum !
The points you mentioned are so relevant. I'm glad to have you onboard, as this kind of feedback really helps you step back and think twice about your systems, especially when the deadline for a project is close and you as a dev are in a tunnel, not thinking much further than how a given change will affect other systems.
To this day this project is not planned to be further developed, but maybe one day I'll go back to it and start it from scratch with a much greater scope in mind.
See you soon on Youtube for my next project !