I think most people on this site acknowledge that we are not the only audience EA has. In fact, we probably make up a fairly small demographic (compared to the moms/dads buying it for their kids and casual football fans). It's actually depressing that EA strives for the masses versus a real/accurate representation of the sport they claim to simulate.
With that said, its tough for me to imagine that this "Heisman Mode" was a highly requested item from any real EA customer base. This "mode", if you will, reeks of something that came from the marketing heads at EA as something catchy for commercials and "back of the box" material. Also, if you look back at recent years, EA has had lots of these "features" in games that the are scrapped for the next year. So to that end, I think its fair to ask "who the heck asked for this".
Just my $.02 of course.....