Well... for one thing nobody WAR/NIN's anymore unless they're skilling up. Great Axe is the new godking, so everyone WAR/SAM's now.
Getting back to the original topic though, I actually do like the current classes and how they've implemented them into the story of the game. If you look at their 'standard' garb, it's plain to see that a MRD is not a WAR, and it's not exactly a COR, especially when you look at the way that COR was implemented in FFXI. ARC's really aren't the same as RNG either, since you won't be seeing any guns on them (yes, I'm anticipating the Musketeer class...) Additionally, GLA's are most definitely not PLD's, with the Coliseum totally not reeking of honor and valor... and PUG's aren't MNK's, nor are they THF's (really they look to me like the Dread Pirate Roberts from The Princess Bride.

) And since when can WHM's cast Flare?