If option is set in preference dialog, a new file will always be opened when Notepad++ starts (even if some files have already been loaded from the previous session).
Thank you for your patch.
This feature is not, IMO, a most wanted feature.
Such feature always needs an option to parameter it.
In order to keep the usability of GUI, the guideline is KISS (Keep it simple, stupid), so this feature (just one click saved) won't be included in the future version.
Hope you understand that.