Hi Flowgun, I'm glad that line of script was helpful!

re:
> or maybe, even better and easier, invert the operations to select the cutter first
> and then the target object (Blender-Style)? wouldn't that save the sea turtles from
> snorting all the disregarded mouses due to the extra clicks?

No, the sea turtles would be upset at that because it would violate one of their design
goals of prioritizing MoI to be easy to use and quick to learn.

One element of that is having commands operate in a consistent manner. In MoI
this is applied by this design rule - commands that modify objects select the object to
be modified first and any supplementary stages after that.

- Michael

UPDATE:

I was able to set up my hotkeys with Autohotkey to be "Spring-loaded", as Adobe calls them.
For me, H is rectangle, J is circle, K is polygon, and L is line (across most Software that I use).
Pressing the key just sends it once. Holding it for more than 200 milliseconds keeps it waiting, and once I release it, it sends the hotkey associated with "Select Last Created Object" Script.

This way, I get the best of both worlds.

It can be done with "Extrude" too. If it's kept held, then it'll send "Delete" after the release, removing the original curves.

The possibilities are endless. It's a matter of preference at this point.

Hope this helps. Cheers.