The people who will be screwed are the middle class people who's only (if any) windfall in life is inheriting part of their parents house and using that to pay off their own mortgage or send their kids to college or whatever (and who's kids will likely inherit a share of the house and continue the cycle).
Because we can certainly reduce the number of complex workarounds - which were deliberately introduced to allow the rich to have those workarounds. We can increase the taxation rate for the highest tax bracket, like the 90% it once was. And we can increase the estate tax.
The current federal estate tax has an exemption of $5 million. Just how many middle class families do you think would be unable to send their kids to college if the estate tax rate after the first $5 million was increased? For that matter, how many middle class families would be unable to send their kids to college of the exemption were lowered to $2 million? Because $2 million seems like a lot to me.
Poorer people will receive no windfall in life. Since you want people to have windfall ... how do you want to support poor people? How should the children of the poor go to college or whatever?
Because otherwise what you write sounds like a standard wedge argument - get the middle class to fear for losing what little they have, in order so the rich benefit even more, while the poor get left out.
Higher pay via stronger union rights (repeal Taft-Hartley now!), universal college education. These help give your desired economic windfall for the middle class and my desired windfall for the less well off.
The rich and the children of the rich will still be rich.
If you are against children being punished because of the economics of their parents, then surely you are in support for a strong social safety network for children (universal subsidized/free childcare, including meals, and healthcare), yes?
Which requires taxation or other funding sources.
Which means we must ponder things like: how much of Sam Walton's $100 million inheritance did his children need in order to not be punished by a higher inheritance tax? $5 million each?