I think a new campaign system would be great...while the narrative campaigns that have been published so far have been awesome, none of them have been updated for DW 2.0, and could therefore use a refresh. I'm also hopeful that we will get a more generalized campaign system; the previous campaigns have all been a step-by-step series of scenarios, more of a narrative campaign really. I would love to see a map-based campaign system that is a little more free-form!