Slide actions are great especially for Complete, but, I dont think it should be used for zoom/collapse, it just slows things down. I need a quick tappity tappity browsing method where I can jump in and out of projects, sub topics etc, sliding, right clicking, or breadcrumbs bringing up a sidebar on the app, when it in every other breadcrumb system seems to use it as a link.

On Workflowy I can jump between branches like a squirrel, Moo makes me feel like a cow trying to leap branches, but still there's something I love about it that makes want to use it.