Custom Fields From Features/Releases/Master Features

I love linking fields to existing Features and Master Features as we have some capabilities across Workspaces that we like to tie back to the actual Master Feature as a reportable field. This custom field works great for this function, but when you add these fields they pull in all of the Features, Master Features, etc available in AHA, We would like to select the Workspace, Product Line so that the selection ensure the proper options when we are using this inter-connectivity of these fields to these custom fields.

This will allow us to properly ensure that the Hierarchy can be enforced for tagging features and or Releases with these tags from other Product Lines we use for tracking horizontal and vertical functions across product lines.