> There are obviously concerns (vote buying, organized crime, etc) but they can be dealt with.

I don't think they can be dealt with. But I'm willing to listen to your ideas. How would you deal with vote buying? How would you stop the scenario where a guy says "I'll give you $1,000 if you vote for candidate X" (or "I know where you live, I'll break your kneecaps if you vote for candidate Y")?