Perma's grilles aren't electrified already?
On a general note, it's very difficult to balance the requirements of perma and make it look reasonable. Personally, I agree with you - perma is a dumping ground for people who need to be removed from the round ICly - but it doesn't make sense to design it like that. So it has to look reasonable, while also being possible to escape, but neither to the extent that people want to go there or Security doesn't want to use it. It's a tough thing to balance.
The good news is that we can take this into consideration while designing the new map. Indeed, I've made a note in our design documents based on this. So, if there are windows in perma (there almost certainly will be) they'll be rather less vulnerable than the current ones. However, it's still going to be possible to breach the area. Short of a panic button that collapses blast doors all around perma that's always going to be an issue.