This could scupper those that want to keep their details private!
The solution has to be registering to generic addresses and generic job titles. That will go some way to solve the issue. Using an accountant's address is commonplace, and avoids disclosure of a home address.
For example,
e-mail address secretary @example.com
Registered address: A Accountants, Any Street, Any Town
Alternatively, how about another entirely new line entry for the whois? One which is a public registration (see above).