Why would they need to completely rework ALL jobs? I'm always interested in fresh ideas, because there's always room for improvement. But it really depends what job we're talking about, and where they want to take it. Is the change actually significant? Is it for the better? And what about all the players who enjoy the job as it is?

One dream feature I'd like to see is the opportunity for customization within a job, like talent trees or specializations. In that case, I think jobs would probably need to be rethought from the ground up, but the new system would really need to be worth it, and carefully designed. Or if they brought back the idea of cross-class abilities, but made it actually good this time. Of course, I know nothing like that is going to happen.