Some users may not want to re-install 7-zip. I think the uninstaller should give the user the option to delete or to retain the registry items. Many uninstallers have similar opiotns like : "do you want to keep the settings?". Anyway, it's up to you to decide :-) Thanks for a very useful program.
As the subject says. It would be nice if the uninstaller deleted all registry entries related to 7-zip. Or Give the user the option to retain or delete the registry entries.