Hello, please, make that it’s possible to Extrude the edge of a siingle-sided mesh without automatic thickness added. This is essential feature for subdiv which is in every modeling program (Maya, Softimage, etc.). It would be nice o not hop in different programs to do such simple things. If you don’t quite understand what exactly I mean, open Maya and Extrude the edge of a simple plane by holding Shift and moving the edge (Here is image from google: http://ucbugg.github.io/learn.ucbugg/images/organic-modeling/frog_100.jpg).
As a variant, the feature to extrude the edge through masking (ZModeler transpose) or Gizmo Ctrl+movement (now it works only if there is thickness of the mesh (basically, it’s extrude poly), without thickness Gizmo is just trying to mask the mesh). Thank you.