Yeah, if this is the way it's going to go obviously I don't want Ross to change but definetly develop. In fact, if Ross does go to prison for Finn's crime, that in itself will be a development for both Ross as a character and for us as a viewer.
Maybe, a potential future storyline if Ross does go to prison, is that he meets an old "friend" who has something on Ross or vice versa and could be a future dodgy-dealing storyline.