There is. It's called a trust. Basically a private legal partnership that owns all the assets and survives the death of any (or even all) of its members. Transfer your assets to a trust, become a director of the trust who receives a monthly salary from the proceeds of the trust (the trust can turn a profit, after all), and you can at least avoid the estate tax.
For now. Who knows what will happen in the future...
You can avoid probate but I don’t think you can avoid estate taxes with a trust. The estate tax is completely unfair. You pay the taxman 30%+ every year and when you die they want another 55% on the inflated value. Why work hard? When my Dad bought land for $100/acre a quarter section would buy approximately 3 Corvettes. When land moved to $800/acre you could still only buy 3 Corvettes. In other words the purchasing power stayed the same. This is why the estate should at least be indexed for inflation. The estate tax is going to finish off a lot of farmers by forcing them to sell land to pay estate taxes.