Allow epics to be created for workspace line level

What is the challenge?

We have multiple product lines that include several product workspaces under them. We need to be able to create an aha epics for larger feature work at the product line level that spans multiple child product workspaces. This type of work is smaller than an initiative. For example, we want a theme for adding the same functionality across several programming languages we support. A feature is needed for each language because the work and delivery mechanism of the functionality is unique to each language thus they have their own product workspace.

What is the impact?

We are having to create themes in one child workspaces for the general capability and then link to other sibling features. It's confusing becuase that child workspace isn't the parent and thus the relationship of records doesn't make sense to the team of PMs. We also want to be able to link feedback/ideas to the general theme instead of having to link to 8+ child features for each language.

Describe your idea

We want a single theme at the workspace line level that relates to all the child workspaces' language features for delivering that functionality.