Get Archived items and comments of a Story out of the Epics API

The Epics API is available, but it lacks important data that cannot be extracted from Epics.

1. Archived items: these can be exported as XLS documents by hand for each sprint, but are not avaiable through an endpoint.
2. Comments on a story: the endpoint for lists and for a specific story are not returning the comments added to the story.

It would be helpful for multiple use cases to be able to retrieve this data from Epics. In both the archived items and in the comments is a lot of wisdom stored - especially if an app is running for a longer period of time.