Harry Potter fans, I need your opinions and ideas.

I consider myself a Potter expert, so I think I can provide an interesting answer. Be warned: I may talk in circles without revealing my true answer. And now for my answer.

WELL, since Harry Potter fully killed Voldemort there is little to no chance of dementors leaving Ministry control. Dementors are a not a perfect solution, however. Most Muggle prisons work on integrating the inmates back into society and deterring the crime from being comitted again. Azkaban does neither. The dementors' prescence causes the prisoners to lose their minds within a week o so. They are literally trapped within their minds. This punishment neither integrates the inmates nor deters future criminals.
There have only been two breakouts from Azkaban that I lerned of. The first was the escape of Sirius Black. His escape would not have been possible if he had not been an Animagus. As the dog's thoughts are simpler, it was much harder for the dementor to have an effect. The other breakout was in 1995, when ten high-security prisoners escaped. This was after the dementors had joined Voldemort, however, and the Ministry did its best to keep that quiet. Most of the prisoners in Azkaban are insane o nearly insane. Thus, it is unlikely the remaining prisoners would immediately realize the dementors' abscence.
Unfortunately, the Ministry did little to nothing to plan to defend against Voldemort. That happy task was left to the Order of the Phoenix. por the time the Ministry came to its senses, it was too late.
If the Ministry DID lose control of the dementors, as it did during the segundo Wizarding War, there would simply be an increased rate of depression and suicide among Muggles. After all, what Muggle doctor would claim that the soul had been sucked out of a person?

I hope this respuestas all of your questions. If tu would like, I can give tu my references from the books.