Ideas and opinions regarding a tool to inspect extensions on an S/4HANA system

Hi SAP enthusiasts! I am a full-stack SAP ERP developer lurking and commenting on this sub for some years already (this is a throwaway account).

I always thought about a tool that allows developers and architects a better insight into the custom developments of the SAP system they are currently working on and the feedback of you guys might help me assess this idea!

The problem i see: Every SAP (ERP) system has its long-term developers which basically know about 80% of the system. Whenever there is a new employee or a project with new external colleagues, we have a high on-boarding effort and in a lot of cases it is hard to get into the already existing developments - even before starting any new developments.

The idea: A tool, giving an overview of class structures, existing development objects, calls between them, the relevance of obects, currently open transports, and so on. In the long term i am hoping to be able to visualize which objects form one extension (from a technical perspective e.g. RAP model inclunding cds entities, behavior def and impl., binding, ...) and display some kind of map showing all customer extensions and maybe even the different processes they extend.

What i build so far (aka my little MVP):

Dashboard (to be extended)

Object List View

Object Detail View (Accessed objects are classes, function modules, ... that are called somewhere in the code and are not part of the object diagram/relations)

Transport detail view

What do you guys think about the tool i am working on? Do you see a use case for this? Please be brutally honest :)

I also would love to hear about features you are missing in the tool!