besides picking cuter interns.
First thing in today's world is national security.
After that, I would use the office to promote ideas such as campaign finance reform, term limits & the line item veto. I would also look for ways to advocate a more transparent and accountable government beaurocracy.
Further down the list would be advocating a flater tax structure, some regulation of trail lawyers, more empahsis on crime & punishment, education & a more directed immigration policy.