Sure. Although I believe the pull here is attempting to cover edgy use cases, recently had a discussion with folks who expressed interest in leveraging the LPPE bit of the handler to reach out to other non-ldap systems to perform calculations. This would allow one for instance to authenticate via ldap, but for instance leverage an external JDBC connection to make do with calculating the expiration date and so on. I believe this change helps to accommodate those who have disparate account stores for user identity and management, etc. (To be clear, the discussion I had was mostly in flavor how inquiries on the lppe module in general, and no hard requirements were presented for work but there have been a few who have attempted to take the L out of LPPE :)

As you note of course, as far as ldap servers go I also haven't come across one with more elaborate calculation needs other than what's here in the code.