Could potentially show you withering connections you havent interacted with, almost an auto recycle bin with the option to dig on there and bring it back later on but dissapear from your main radius of attention if withered.

Slack has started doing this in the last year or two - these are channels that you rarely interact with - want to leave?

Instagram has something like this where it shows you "least interacted with". It seems broken to me though, as it showed me people who I do interact with.