I'd like to ask your opinion about the following drawings. I'm thinking of designing the new generation of project PCBs in the way displayed below.
Making them like that would enable me to use the PCBs as PCBs and as a structural support for the modules, with the benefit of eliminating the annoying module connectors and module vibration.
All the displayed parts are PCBs. They would be mechanically attached to each other using the slots and fixed in position using solder pads. Modules would be electrically connected to the box using solder points on the bottom and on the sides, which could also carry more connections such as a redundant power rail, or a redundant SPI bus. Modules would also gain more space, being able to grow a bit to the sides if needed.
I need your expertise. You have a unique view about this possibility and can help a lot this project by sharing it here. Please let me know what you think.