In T210002 we were discussing the broken logic of user suppression via the oversight usergroup. Currently, the block must be configured to Indefinite Sitewide before the "Hide username" checkbox appears.
------
**Proposed changes**
* Move the `Hide username from edits and lists` checkbox to the top of the "Actions to edit" list on the new version of Special:Block, above the `Editing` checkbox
** Note that this only appears to users with oversight permissions
** We should also consider changing the checkbox label.
* If the 'Hide username' checkbox is checked:
** All following checkboxes under "Actions" should be marked as checked and disabled.
** The 'Sitewide' radio button should also be selected
** The "Expiration" should be set to indefinite and disabled
------
**Latest Special:Block mockups**
{M255}
------
**Notes**
* The current UX is hide/show, while Wikimedia's style guide now calls for enabled/disabled. If we opt to not rearrange the block page for oversighters, we could make this change at a minimum.
* Changes to the UX of Special:Block should not affect any logging or suppression actions or API actions