How can we configure the list of reasons? On Wikidata, we often have users create many empty pages, and we prefer to indicate that in the deletion reason.
Topic on Extension talk:Nuke
So I have found that the list of popup reasons is configured on MediaWiki:Deletereason-dropdown, and "Empty item" appears on the list of reasons for namespace 0. Unfortunately, there doesn't appear to be any way to get namespace-specific reasons to show up in the interface.