the gui can show:
Visible paths to player
and their pre/reqs
Players current path
with "live" status of path
past paths with date of completion* optional not a biggie
and if Autorank detects a Stat collector plugin, it could link to a gui of servers collected stats for that person/ whole server.

That's a good idea. How would you show the GUI though?

it would be a "chest" with interactive icons, similar to Statz.
the command could be as easy as /ar gui or /arg
the initial command would pull up the main gui, current path/s, possible paths, *completed paths, *stats.
from there the current paths could be set up to show paths player is on with user set icons (could be added to paths.yml) upon clicking a path will show all the reqs, with icon based off the req (could be another addon in paths.yml)
ect. for the other 3 main options

Sounds like a plan!