This will surely improve ATC and safety in Brazil !. Condemning/Sending a few sergeants in jail absolve in the eyes of the public the responsibilities of the top brass who put this system in place.
But in the background a lot is changing fortunately. The ATC system flaws have been corrected, Flight plan processing and display adapted to fit the rest of the world, and procedures tightened.
What has not changed unfortunately is the fact that the Military still run the show, and treat their controllers like low class workers, with the same basic training and lack of motivation.
It might take another wake up call, hopefully without casualties, for them to change that.