We often have batches of six to eight related cases which have much of the same content (relationships, custom fields, activities). I would like to generate new cases by cloning an existing case multiple times. Before I embark on writing a new extension, has anyone already done something like this?
Another alternative might be to use the CiviRules extension, and develop your own action that prepopulates cases upon creation?
Check for https://civicrm.org/extensions/civirules the extension and https://docs.civicrm.org/civirules/en/latest/create-your-own-introduction/ for documentation on developing your own actions.