In the undo/restore form, it would be nice to preview the full item as it would be if the user clicked save, in addition to the diff.
It's unclear though where the summary/submit form should be placed then. Above the preview, or below? Below would be the logical choice and consistent with the way things are done for wikitext, but since items may be quite large, this could also become very inconvenient.
Version: master
Severity: normal