IMO they shouldn't get the frighten_foot trait. If we gave every "badass" unit this, then battles would be 10 times shorter and most mid/low level troops would on contact or before. Dosidataskeli, , Uachtarach DuboGaiscaocha, Goidilic Ordmhornaght, Carnute Cingetos, Kluddobro, Rycalawre, Soldurii, Arjos, Galatikoi Kleruchoi, and Galatikoi Kuarothoroi would all need the traits according to the badass meter, and these are only celtic and iberian units.