Say we have a product feature for user profile management which is considered an epic. Under this epic are 10 user stories.
When we have new user stories / tasks related to this epic, how long is too long, to keep adding to the epic?
Let's say, for example, the 10 user stories were completed, the epic is closed. Three months later, following user feedback, we need to enhance the user profile management. Do we add to the existing - but now closed/completed - epic, or do we create a new epic? (User profile management 2?)