His are my ideas too:
1. Eliminate all deductions in the individual income tax code
2. Eliminate the corporate income tax.
3. Tax capital gains and dividends as regular income.
4. Eliminate the death tax as well as the write-up of asset values at death
The main problem with the above would be an unemployment crisis for lobbyists, accountants, and tax and estate lawyers, and we can't have that. And golly, what would it do to the muni market?