MRD is a tank, not a DD, and if they do dps, they pull aggro then tank anyways since its also their threat combo. We will get more jobs to offer more roles to classes like arcanist has. Jobs and classes have set roles and their abilities reflect that, if you want to do it different (and likely sub-optimally) make your own groups, optherwise duty finder pugs who alreayd have a alot to deal with will now also have aggro pulling mrd "dps" and white mage "dps" and all sorts of other silliness.

We need DF to be better, not worse.