Modify as in wrapping it with additional functionality.
That's sort of the idea behind scripting.
Begin
[getclass of existing object to be extruded]
[run extrude command]
[change class of new extrude]
End
The VSextrude functions look lovely.
But implementing them with something like the familiar interface is more complex than just calling DoMenuTextByName.
At some point, I'll probably take another crack at it.
But I stand by my assertion that not being able to call extrude from the menu is stupid.
The fact that the documentation is just plain wrong, however, is pure Kool-Aid.