Initiative - Include Related Records

It would be helpful if we had an option on initiatives and rollup initiatives to automatically include any records related to the records related to the initiative.

For example, after associating a release to an initiative, we could click a button that would automatically assign any features of that release to the initiative as well. This would be helpful to have for any records that could be related to the initiative.

Using automation rules does not seem to be an option without creating a rule for every possible initiative / release combination.