[inopinatus]

Answer: as a browser for hosts you don't use commonly.

Long ago I wrote a similar ssh target browser, in just a few lines of Perl/Tk, that pulled all the hosts from my then-employer's server database (several hundred of them, thousands if you included our dev/test VMs, and constantly changing) and created a simple tree view for reviewing and navigating the set, based on location, functional role, sequence number, customer, software level etc.

Also handy/dangerous was having it launch mirrored gterms for a given set.

Half the staff used this tool. I'd be surprised if most admins of moderate-to-large installations didn't have something similar.