For every revision, there are three aspects that can have its visibility changed: the actor, the content, and the edit summary. Where a revision has had one of those aspects suppressed, regular administrators are unable to revision delete other aspects or remove revision deletion.

There are two situations where this is unhelpful:

• An Oversighter may have suppressed parts of a revision, but did not notice that there was other suppressible information (eg in the edit summary). An administrator is unable to revision delete the suppressible information, and only can request suppression.
• An Oversighter may have suppressed parts of a revision, but there are other aspects of the revision that are disruptive and worthy of revision deletion but not suppressible. Likewise, an administrator is unable to act and would have to request an Oversighter's help.

Extending this feature to log deletions would of course be appreciated too. Pre-emptive apologies if this duplicates another task.