I think it would be a nice touch to be able to import organization details from CSV, much in the same way that users can be imported.
A bonus feature would be to be able to link users to organizations on import. For example, import all organizations, then import users and have an organization ID or other unique identifier in the CSV to link users to their organizations.
Currently if one does a bulk user import, organizations still must be created manually, and users linked manually to these. Can be quite daunting for big datasets.
In my case I have added a custom field to the users for "company" data as this is much faster and easier to import.
Sure, you could probably import them via SQL script... but a UI option would be nice.