A simple solution is fair* "flat" (graduated) tax every year on both balance sheet (assets and holdings) and income sheet. An inheritance tax would be unnecessary, because balance sheet reporting would handle it. One page form, no special amendment shit for megafarms, special credits and other edge-case crap. Also to make things fair across-the-board, tax companies and trusts in a similar manner. And yes, people would continue trying gambits. It would never happen of course unless people get organized and insist on it.

No more hideouts for the ultrawealthy while everyone else subsidizes services they use.

* Poor pay less down to 0% for 2X minimum wage, % levels out at some upper-middle class level and stays constant.