No, no, no, no NO!

A Marauder is not a warrior, a Conjurer is not a White Mage. If you want traditional classes, have them introduced additionally to the game in one of the two suggestions outlined in Letter V. Changing the current classes is not required and -I think- would be like an admission of defeat. I love that the Devs are listening to the community for game suggestions, but I also want them to retain the ability to think for themselves!