I've been working on addressing a similar need, but for CNC machines and from a very different perspective and UI approach --- small, specialized tools which allow making one thing/doing one task:

- Flatten aboard: https://studio.flet.dev/run/46tp8GPq9g/

- Make rabbeted box w/ optional sliding lid: https://community.carbide3d.com/t/rabbet-box-designer-on-fle... (working on a hinged option now)

drawing on what I learned putting together: https://github.com/WillAdams/gcodepreview and https://willadams.gitbook.io/design-into-3d