Not sure if this is a new idea or not

[Gaius Terentius Varro]

I vote for gulag prisoner camps

[Sentinel]

I vote for gulag prisoner camps

.

That's a good idea.

It could be positioned next to your settlements.

Enemy spies could then be allowed to open the gates, releasing a few full stacks of vengeful prisoners right in the heart of your empire.

That should make the end game more interesting, if all the prisoners you have taken during your campaign suddenly escaped during an earthquake.

[Fußball]

I believe that would be interesting if CA could implement it. I think it should only apply to nobles captured though, such as generals and royal family members. That would help to sway a very resilient AI faction to ceasefire. I doubt CA would implement it though, even if they could.