Add more field choices to mailing lists

In the Mailing Lists module the choice of fields for export to xls or labels is quite limited. For example, only the person's default address is exported. But since Populi allows inclusion of home, work, and other addresses, it would be helpful to be able to use these addresses in the Communications module. Couldn't they be available as choices when selecting fields to export? Custom fields are available, but it seems silly to create custom fields where built-in fields already exist.
It would also be helpful to choose an organisational address to export so that we could send mail to a person at their place of work, church, or school, rather than home.