As mentioned in the title.
I think it would be good to add some additional default actions to default UserAdmin class.
I think the most universal and helpful would be marking user as active/inactive.
I know that this is a small and easy-to-implement change that we can expect anyone interested to implement on their own. But I think that implementing it in the core of Django would save this effort to many developers. This kind of small quality of life improvements makes Django easy my favourite web framework.
This is a followup to PR: Add action for deactivating selected users to User admin panel by pktiuk · Pull Request #16972 · django/django · GitHub