Referencing parts of parametric geometry

Parametric geometry is great to make files that are small in size and flexible when being modified.
But what if I have to reference a subcomponent of a solid? E.g. for dimensioning, connections or quantities? in that case BREPs would be better because the same points, faces etc. can be reused. How could one get the best of Noth worlds? Storing both geometries? Or just topologies of the parts that need to be referenced? I guess an application would need to take care of the relationship (top face, specific edge of footprint rectangle,…). Is there a topological query?

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