- ๐ณ๐ฟNew Zealand quietone
There hasn't been conversation here for 9 years and the majority of entities that extend ContentEntityBase are revisionable. Those that are not are comment, file, message, shortcut, and user. Of those there are issues for file, user and comment. And for shortcut and message, there are issues to discuss removing them from core. Those should be resolved before discussing making those entities revisionable.
I think that this issue can be closed and implementation can continue in the other issues.