New owner of a new 2019 SL (Canadian Model). Working my way thru the various menus, was surprised to find a Key-Link option could be set up for each key, but puzzled as to benefit since this model does not have memory seats. Familair with this option since other vehicle is a 2018 Murano SL.
What am I missing if anthing other than confirmation by the car of which key is in the cockpit?

 

It also sets the outside mirrors as well as the driver's seat for the more deluxe models. Good point on what it does for the SL?