I highly recommend a new book from Aileen Leventon and Jenny Anne Horst-Martz called Legal Value Track: Transforming task codes into predictable pricing and law firm profits. For an excellent overview of the business applications of the wide range of code sets in existence, along with an explanation of various initiatives undertaken to improve upon them, including SALI, consult this publication. We receive many questions from people asking how SALI fits in relation to other efforts, this book provides a lot of the answers.
https://tinyurl.com/LegalValueTrack/