Replication Empowerment, which is a power on here btw
I think a strong utility of self-replication would be if every copy made is in a peak conditioning regardless of the original users own state (like if they were originally weak or at low health, the copy would be a strong backup). It could be potent enough that, even if the original were to die, the clone would remain with all their prior abilities and memories intact (though likely wouldn't know if said original had died somehow)