If I had campaigned on "fix Washington" and that seemed to be the primary driving force of my supporters, I guess I'd focus the bulk of my time on process. Ending gerrymandering, devolving power, making Congress' procedures work better, actually punishing even very top ranking officials if they broke the rules, things like that.
Obama campaigned on "fix Washington" but then went on to drive a fairly ordinary centre-left policy agenda (centre-left by American standards).