Extend Shared Dataset / Data Model

Shared datasets is a very powerful tool that we are beginning to use in our organization. We want our users to leverage a shared dataset as much as possible when building their reports. However, if the user wants to add an entity or two to the data model, they can only do that by requesting it to be added to the base model.

I propose a feature where a user could "extend" an existing data model from a shared dataset that would only impact their version, or view of the model, leaving the original model intact and unchanged.