When you use Editorial for a while, you start collecting a lot of workflows. I've added the most used workflows to the menubar, but found the drop down lacking decent navigation.
So I create a couple of empty workflows with contain only a title that stands out from the regular workflow names. Each title -- GROUPNAME -- is followed by all workflows from that category. Makes it easy to navigate and find what I need.
I hope Editorial's 1.1 update will somehow address this issue.. either by adding collapsable folders, or folder based navigation like Mail.
Although it's more luxury than necessity. It's still a great app.