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A lot of President's job is unpredictable. If things go wrong, the President is the de facto leader of the process. Many years, this will be the majority of the President's job. Two common classes of issues include MIT suddenly changing something (eg, masks are no longer required) and needing to figure out the response, and handling officers who are dropping the ball on some of their responsibilities. If the President doesn't have projects, MIT doesn't change things, and officers are on top of things, the job can be basically dealing with getting new officers (elections+appointments). (I'm not sure when we last had a year where nothing went wrong, though...)