You know, we can rant all we want about about Obama's tax plan being a fantastical joke but until the average American understands the Laffer Curve, supply side economics and how lower tax rates can increase tax revenues then "soak the rich" pandering is going to be effective. The problem is not that Americans are vindictive, it is that they are undereducated about basic economic facts.
The solution is to develop a steady flow of information to the masses in which basic facts are spelled out plainly. Make it an ongoing series of TV spots. Go right around the "news" people and be willing to pay to get the message out. Romney should be the one doing the talking -- it fits with his "I get business and the economy" profile.