The reason we use a representative democracy -- at least as I understood it back in high school -- was because all of America couldn't vote on every issue being proposed, for logistical reasons.

That was then, this is now. By the end of this century, I wager that all voting will migrate online. If 200,000 people can vote each day on who the best quarterback is, I'd wager you'd get better turnouts if you made it so people could click on a radial button next to their favorite law/candidate from home.