The idea is to add an aditional layer around the core models (like networkElement and others).
This will enable more flexibility in the nucleus package and remove problems with circular dependencies and the question where to place interfaces for our services, stores, ...?.
This should also remove the interfaces folder that is filled with interfaces and structs.
After this we can also think about moving movings like rbac and topology back in the nucleus instead of in own packages and shared functionalitiy (like stores and services).
This will roughly follow the ideas of ports&adapters, hexagonal architecture and/or onion architecture. (I like this article about it)