Gundark
Explorer
I'd say it's not as cut and dried, listening to people debate the merits of class/level vs. "skill-improvement" systems such as GURPS, Shadowrun, and Savage Worlds.
However, I'd say still that even though class/level based systems offer a little more abstraction, it's important for introducing new players to the game. Some people dislike the fact that "I'm better simultaneously at translating Ancient Greek AND taking more sword thrusts" in a level based game, but from a new player standpoint it's easier for them to understand that "higher level = more power" than "more gun skill, plus parry skill, plus these three tactics feats = more power" in an a la carte system like the three above.
This.