An earmark ban would be a huge reform, or nothing garners the label reform! Earmark bans have never been about reducing the deficit in themselves. The point is that banning earmarks enable the fiscal discipline needed to do the real work of cutting larger programs. Earmarks are the candy that allows Congressional leadership or the Whitehouse to keep large programs growing wildly: "vote for another 10% increase in the overall budget Congressman, and we will allow your lobster museum earmark."
After that, some of "these guys" have detailed plans for serious spending cuts.