I don't think forced CKs should be a thing. Leave it the way it is with CK agreements. As for the prison aspect, I 100% agree with what @pure north said. It'd be nice to have an actual court system although I think it should maybe be limited to something like felonies and federal crimes to avoid clogging the system. Players should be able to rp as a lawyer for hire or work towards a career as a state attorney if they want to. A court system would also allow for civil cases. Prison time should decrease when not in-game possibly at a slightly slower rate than when in-game or players should be limited to spending only like 95% of the sentence offline and must serve the remainder in-game to encourage prison rp. Prison rp can add a lot to character development, especially if your focus is illegal rp. That's my 2 cents.