I play highlander and 6s. In hl I play engineer because you get rewarded for playing smart. In 6s my team is trying to show that the players can't adapt to change in the meta game. We are rolling a full time pyro(a former plat pyro buddy of mine) and a full time spy(me) and destroying in every scrim. It's this inability to adapt to different strategies is what makes me somewhat dislike the 6s play style, but it is fun making teams rage quit.