You're right, the mortgage interest deduction goes mostly to higher income homeowners. It's still a good idea but the value of the property should be capped and the deduction limited to a first house. That in itself would have both problems and benefits to the larger economy. I would keep the estate tax as is and tax long-term investment yields at the income tax levels. Income is income, the lower rate is a tax write-off for the wealthy, especially professional investors. True enterprise should get a break.

Thanks for your comments.