I really dispise this everyone gets to be every class at once thing!

In my eyes, this defeats the entire purpose of gaming online.
In most MMOs, one character = one class. People want to try each class. So what do they do? Roll alt characters. Half the point of the system used in XI and XIV is to eliminate the necessity to create alts to play the different classes. People are going to do it anyway, so why not cut out the middle man? This way, you have one identity instead of several and you get the same benefits. What's not to like?