I would be in favor of taxing personal income and capital gains at the same rate, simplifying things even further. That would make the Democrats hesitant to raise rates, as it is unwise for the tax on capital gains to be too high. The taxes on capital gains would go up to match the rates on personal income, which would be somewhat lowered (like in the tax reform of 1986). The rich probably would accept that bargain in return for eliminating corporate taxes. Eliminating the corporate code altogether would eliminate huge compliance costs we have now and be a boon to business. Eliminate or cap deductions for the high income earners especially (should happen naturally if the tax code is vastly simplified) and the rich would probably start "paying a little more," to use Obama's phrase.
Too bad such issues were not discussed in the general campaign.