It is a bad idea when you overdo it. 87,000 agents is overdoing it. Those agents won't just be going after "The Rich." They're coming to your and my door at some point. Cracking down on tax cheats with draconian measures won't accomplish much. People that are going to cheat will simply find ways around the system, whatever it is. That's true everywhere on the planet.
The reason it's a bad idea is if you as an agent are promoted and incentivized to find tax cheating / mistakes in filing, you will find them. If that comes from nitpicking people, the public will respond very negatively to that happening. People will be, in turn, incentivized to find ways to screw the system out of their share just because they feel the system is now unjust.
Italy has long been Europe's top tax cheat country. They have obtuse and convoluted tax laws not to mention high taxes. It has become a national pastime to cheat on your taxes there.
https://www.nytimes.com/2012/03/09/world/europe/italy-tax-evasion.html
The government has tried to crack down on tax cheating and all it's gotten them is less revenue. The same will be true here. If the tax system becomes onerous, the rich will move their wealth elsewhere and avoid the taxes. Better to set reasonable rates and standards than try and use authoritarian measures to wring the last few pennies out of taxpayers. People don't mind paying reasonable taxes. What they do mind is being put under a microscope and being held to what they see as unreasonable and mean attempts to play gotcha.