He asked what scripts and addons to add, not if you like prisonRP or not.
Suggestion: Add activities for criminals that they can do inside prison, such as drug dealing and ... maybe something like a quartermaster to get weak guns. Also make some jobs for inside the prison. Also to add activities for people that escape prison as well, give them more possibilities of course.
To make it even more unique, make some kind of connection between Outside world and Prison, so people can get supplies from an outsider! Now that's what I would really like.