Okay now that LabVIEW 2016 is out, and the Mac version of 2016 is also out, I went and downloaded these VIMs that were in the user.lib. I hope I'm not doing anything wrong in posting them here, because these are files that are just available in the evaluation install anyway.
When asking around the unofficial name for this new structure that automatically enables which ever case has no broken wires is the "Type Enabled Structure". It looks and behaves very similar to the disable diagram structure but specific cases cannot be enabled by the developer, and the border is a bit thicker. As always with unofficial features, don't be surprised if it changes functionality, or support, or gets removed with new versions of LabVIEW.
My presentation on XNodes, and VIMs is available here, under the 2016 Advanced User Track.
2016 User.lib Macros.zip