What is the concept?
Why do we need it?
Who benefits from it?
There are many ideas within this request. Some already exist and have been on the roadmap for dspConduct (i.e. more autogeneration of task pages (DCS is not part of the DSP); I.e. the connection form Tasks to Validations and Business Rules and the additional AutoGen of Tasks pages with control views and default tables.
Other functionality will be addressed via Data Lineage functionality already planned as well. Within this, one may see all fields in the data model and see any report, view, procedure function that is involved with populating that table's field or is dependent on that field. This helps with error resolution, impact assessment as well of regulatory compliance where Lineage is required.
However a lot of the documentation and requirement gathering will never be in the DSP as the persona there is the Business this information will be captured in the IGC.
To Summarize this is all really already planned, however not in the exact way mentioned here and not all in the DSP.
The same concept of Map for dspConduct is certainly not something that is going to be implemented however.