ZFS snapshot automounting on $volume/.zfs/snapshots/$names feels like what Time Machine wishes it was. Super low-friction method of accessing past versions of your data.
Sorta thing that makes me occasionally update my "Linux on the Desktop" notes, just in case Apple ever releases my personal iStraw that breaks the iCamel's Apple Back™.
Also relevant to my Gaming on Linux note, come to think of it; would still use Ludusavi to back savegames up to the NAS, but way less often?