Firstly, I have to say that my interest in doing criminal RP considerably increased last year when a particular Judge started throwing around threats of unusual and bizarre punishments not found in the WJF handbook. Things that would obviously not be fun for my character but amusing on a OOC level, fun concepts through which I could explore how my character would react.
A lot of the best punishments, in my opinion, involve a choice that the victim has to make. This choice is, how far will you go to hold onto your dignity? I know some characters who would rather face death than make a public apology statement. Some characters for whom doing community service for a corp is a humiliation that would challenge the way they see themselves. Especially if the corporates involved actually do things to make the community service engaging rather than just having the person occasionally do janitor duties until the ~2 weeks is up.
Also, could we get more interaction with the Corporate Buyback system too? What if you give a person a choice between a 50k fine, clone death, or becoming a corporation's legal property for however long? One of these has more exciting opportunities for RP than the others.