I feel like this system and the grand company ranks could use a huge facelift. There's still many ranks we will probably just never get to in the GC because it seems SE has abandoned it in favor of other pursuits. You can even see them if you view your current rank!

Would be nice to have other options for companies as well like Temple Knights, Ala Mhigan Resistance, or Sekiseigumi. Just to throw out some examples lol.

Hell, the Firmament had a tease for an Ishgardian branch of the Adventurer's Guild that never went anywhere, why not build on that too?