Seems I have forgotten to post my Power Pivot tool here. Well, here it is:
https://u3d.as/3aas?aid=1100lqC54&pub...
Manual:
https://kamgam.com/unity/PowerPivotMa...
Key features: Non-destructive Pivot Editing, Real Pivot Editing (mesh modification), Scaling along two axis at once (I still find it odd that Unity does not support this).
If you know the Blender cursor then this will feel quite familiar (hence the red and white colorization).
Enjoy ;-)