New features in Workflowy Beta (https://beta.workflowy.com You have to enable them in settings.

Cloning, so the same item can appear in multiple places in the hierarchy. Editing one edits them all. ("Mirroring" in Workflowy's terminology).

Link editor, so you can create proper HTML links, hiding long, obnoxious ones.

I'm not entirely sold on the implementation, but it's beta.