The income tax should be extended back down to the lower income levels as it was before the mid 90's...
I still think that one of the oddest moments in US history was when the Republicans took over in the 90's and they made the income tax system way more progressive on the basis of "family values".. it was supposed to give people with big families a break...
I like consumption tax. It hits everybody. We have huge consumption taxes on Alcohol and Cigarettes, which are consumed massively moreso by the poor, I'm all for that to offset the stifling aspect of the progressive taxation system...
There are really only two directions to go for more taxes. They can't go for the corporations, they don't pay taxes, net.. they have to go after paychecks because once you have an established paycheck coming in they know where to find you, and consumption, with the point of sale terminals we currently have collecting that is trivial...