A House Number script with its controls in the House Number mini-editor. It injects the next value in a sequence into each new HN. To support different regions, house numbers may be [0-9]+, [0-9]+[a-z]+, or [0-9]+-[0-9]+.
Can't you add a "set as defaults" button that save the settingsin the localstorrage(browser) and load it on script load?
If needed, i maybe can help if you have a git.
Suggestion
Can't you add a "set as defaults" button that save the settingsin the localstorrage(browser) and load it on script load? If needed, i maybe can help if you have a git.