I don't mind Dunn batting 5th, in fact, I think it kinda makes sense. With Griffey batting 3rd, chances are he'll drive in some runs. Having Phillips next gives him a chance to get on, and Dunn at least has the possibility to get him around, or even hit more 2-run home runs than solo shots.
I don't know. It made sense in my head, but I'm not sure I explained my thinking very well.