Tax evasion with existing laws works predominantly because the agencies are underfunded and not equipped to track and follow the tax evasion schemes of the ultra rich, while they simultaneously lobby for that to stay that way or become even worse.
No matter the change of code, these issues will not go away, because there's always some way to hide what you have, no matter the laws. While the current state of tax laws (no matter where) is very sub-optimal and heavily favors the rich, there is no way that a mere change in law would change that status whatsoever.
Since I personally do not evade taxes, I couldn't tell you all the loop holes some high powered, high paid professional would find in your proposed scheme, so my assumptions are pretty low level.
Your proposal hinges on even knowing what they own. That's already heavily obfuscated beyond some prestige projects they like to flaunt. I don't think that it would be feasible to enforce finding and knowing what they own, because it's already hidden in layers and layers of proxies, including non-profits, charities, etc.