Should ranks be turned back to F-Class, E-Class, or stay as "Starter Wizard", "Novice Wizard", etc?

I honestly prefer it being wizard over classes, because most games are using that specific ranking of F-Class, E-Class, D-Class, etc. until SS-Class, which doesn’t feel fitting. It’s definitely better for it to stay as Starter Wizard, Novice Wizard, Apprentice Wizard, Adept Wizard, Advanced Wizard, etc. until Legendary Wizard.