@, so happy to hear from you again.
**“Double-click edge to select edge loop.” **
Added to my todo list. The current edge loop detection is still quite primitive, will try improve it in future updates.
“Some way to highlight some faces and split them off into a new mesh”
Since 1.0.8, you can select faces, then press “Detach” button to make a new mesh from selected faces.
“Attach” can be used to merge selected mesh in content browser to current editing mesh.