All of these ideas are horrible, and if Bush even proposes one of them, it will constitute a betrayal of the American's people's trust in him. He never mentioned any of them during the campaign, because to do so would have meant losing in a landslide.
No fear, Nick. It would take the government over 4 years to scrap and install any of the above new tax systems, since they would have to re-educate the citizens of how it works and what their responsibilities are. That alone would take two years, of course, after the Congress runs all conceivable problems and revenue income from such a change.