One thing I would love to see is government mandated debates between candidates. Several of them, in different formats and on different topics. The candidates can have a hand in choosing the person giving the questions or coordinating them for town hall debates, but they don't get too see the questions before hand.

Instant runoff voting would also be a good thing, as they negate spoiler effects while still being easy to understand. IRV would radically change US politics by opening it up to more parties.

I like the idea of public campaign finance via political parties. Doing that would make the parties themselves stronger and individual candidates weaker, something I think would be good for the country overall, though it would be such a radical change it is hard to say.

Jay