I've gotten used to the current classes and jobs, and if they replaced them I would dearly miss them. If I wanted to go back to playing RDM/BLM or WAR then I'd go back to playing FFXI. Right now I love being archer yet using a skill from pugilist to recover health. I would not want to see too much change to classes after the redesign.

IF however, the change was simply to rename some classes to be more clearly recognizable (ie. the magic disciplines) I could go for that.