What problem does this address?

As part of the second FSE outreach call for testing, someone reported a crashing experiencing yet found that there weren't any autosaves in place. This begs the question of what's currently expected for autosaving especially since FSE includes so many entities. It's unclear to me what's expected here but this is something that users have grown accustomed to so it should be considered.

What is your proposed solution?

This is tough to say due to the multi-entity saving process we currently have! Perhaps something the autosave could reflect that with a multi-entity selection option for what to restore.