HMmm... phrased like that it almost sounds feasible as plan, but a bit tangential, I was replying to your question about how I knew there were multiple roles, and that I wouldn't lie about something like that. I might, if I were a DF roleblocker, know there were roles simply by dint of existing, barring a red herring why have a RBer if there aren't a fair number of active roles, as opposed to cop alone, or cop and doc, the default for a 12 player basic game. Were I a town roleblocker, a tracker, a watcher, or even simply a non-standard role of cop or doc or a very clean hybrid thereof I would feel safe saying that there were likely a decent selection of roles.