Hello Filippo,
I improved a little the extension and made it available on sketchucation plugin store here :
https://sketchucation.com/pluginstore?pln=MCT_add_co2co
The plugin now saves the last path searched as you mentionned. I also added the possibility to set a random orientation to the component added:
https://www.youtube.com/watch?v=uVtHTkbbf8s