Most people have three campaigns they touch daily and thirty they do not. A list sorted by date treats them the same.
You can now pin campaigns to the sidebar, alongside pinned segments, so the work you are actually doing is one click away. The sidebar also keeps a recently visited list, so returning to the lead, segment, or campaign you had open twenty minutes ago does not require remembering its name.
Recent items are scoped per workspace, so switching between clients does not show you the last one's work.