Ok, completely eliminate the estate tax and the stepped up basis.  There is a unpaid tax built into most farm operations (estates) that is forgiven at death.

There was a post on NAT a few years ago that really pointed this out.  Posters son had wanted to buy some ground from poster, poster told him to buy somebody else's ground, you will inherit mine.  This makes tax and investment sense for poster and son, but does this make sense for America.  This policy leads to consolidation of wealth in fewer hands.