He ratted in return for nothing, as for his reputation I don't think it was that great to start with. The government screwed him for whatever reason. I think his stories conflicted with Massino's or another rats, so they cut him off and made him stay in prison. I don't think any made member has the right to make a deal, I don't care who disagrees. They all get off, even non made guys like Rubeo and Borrello, up to massing and Gravano. They are let go for murders, or do only a few years. Casso got nothing in return. I think there is more to the story that will come out one day.