Actually, it is this feature that's a workaround. It adds a special command line arg for the particular use-case of ignoring every other metric and showing just JMETER in summary. My question is: why are we treating JMETER specially?

If, as a team, we decide that most metrics should not show up in summary page, then we should just remove the default "important_sub_metric" list of each metric from naarad_contants.py. That way we are not creating special command line args for special use cases.