I am also loving the concept of the Class-Job system, so I totally support it. Jobs are much more focused with the role you are playing (Tank, DPS, Heals) while Classes give more versatility. We should be given more freedom in our builds as to not end up being the same as the millions other players with the same Job. (All Dragoons are STR focused, all Tanks are VIT focused)

I am hoping they could make Classes a viable alternative way to play end-game too. I am trying a healer Archer and a DPS Gladiator with my toons. But at present my heals and damages are far too weak compared to jobs of each respective role. A THM having 50 mind heals around 100+ HP (actual healers might have healed more), an ARC with 50 mind heals almost exactly 50 HP. My choice of sacrificing some of my Archer's DPS in order to be a viable emergency healer is not worth the trade-off. (Though my crap heals DID save my guildhests from failing on at least 2 occasions)

Obviously, these customizations won't be acceptable in PUG raids and dungeons, but for personal adventuring they should at least be fun to play.