As a leader who follows sometimes, I can tell you what I like and what I've been taught about the followers forward step. What I want as a leader: If I ask you to step forward I want you to drive the movement, to energize the step, to own it. What ever allows you to do that is fine by me. As a follower: I have been told my heel steps are "stronger" and my toe steps are "smoother". My teacher told me she liked my follower front step better with a heel step.