Harve Bennett's impact on Trek was enourmous. It was the subtlely reimagined version of the universe that we first saw in Wrath of Khan
, that became the template for every following Trek movie, and every flashback in the TNG era.
All that said, whoever okayed those Space Mountie uniforms was high. They make a nice dress uniform, but for day-to-day duty on a starship? Nu-uh.