We've updated our Maestro Template Builder in our Maestro 4.2 release!  

Our new Template Builder is now based on diagram-js, the same Javascript library that powers BPMN.iO.  With this update Template Builder now supports:

• Panning the canvas
• Zooming in and out
• Task palette bar where you can drag and drop tasks on to your canvas
• Alignment guides automatically appear allowing you to properly align tasks horizontally and vertically
• Task shapes to show start and end as round and IF as a diamond
• Modal editing window enlarged.

You can watch a quick video on how it looks and works here.

This is a drop-in replacement of the original visual workflow editor.  There's nothing you need to do other than update Maestro, clear your cache, and enjoy the new interface!  You may have to pan/zoom your canvas around in order to centre your workflow, which in turn is stored automatically in your template's data.