Jailbreak is nothing fun really as an MP. You sit there and see someone break in and then just gun you down to free someone. So wouldn't make any MP round fun. As a person who has played MP and got shot any many times from marines with minors crimes. It's not even funny in the end when I caught the person.
Jail Breaks need to be approved/denied by admins. Thats what I think of how jail breaks should be dealt with first, but could cause the whole round to be shit at that point for the rest of the CIC and MP crew.