Push/Pull tool is very useful and one that I use a lot. In particular having the "move face" alternative to "extrude face" mode is useful. But when you use the "sub-face" mode, the new face you generate can only be extruded. It would be great if we could choose to push/pull that newly created subface in "move face" mode straight away.   Alternatively, an option just to create the new subface in situ (ie coplanar with the face that it's been split off from). Then the extrude/move action