Add the individual to this sequence if they have a case/filing that is coming-up, or will need to be filed, in the near future and you would like to remind them that it's time to get started thinking/preparing for it.
Add the individual to this sequence if they have consulted and/or worked with you and you would like to have them leave you a 5-star online review (Google, Yelp, Avvo, etc.).
Add the individual to this sequence if there is nothing else that needs to be done but you would like to remain on top-of-mind awareness by sending a weekly, bi-weekly or monthly email.