I have batteries married in 2's and 3's, and a bunch of singles. It would be nice to be able to pick from a large lot instead of married sets and unmarried sets, but it's not a big deal. I mostly use one mad at a time.
I could see, and appreciate, being able to just group them by close order of cycles used.
With perhaps a seperate group for ones that have been... "riden hard".
With those kept under even closer watch, and retired early or cycled to another "light draw usage" group.