Well, the Guardian/Consular/Sentinel split has been included in Star Wars: The Old Republic, which takes very little from WotC's RPG books.
Problem is that FFG has already incorporated a "class label" system with EotE and AoR, using terms like "bounty hunter" and "smuggler" and "soldier" and turning what were generic labels into class names.
While it doesn't have to be mentioned during gameplay itself, it's a convenient short-hand for a player to use when answering "what type of character are you playing?"