Well, one thing the cop may be doing, if he found a townie, is instead of declaring it, instead pushing harder on other players. Or he might be wary of how reliable his information is. If he only is "cop", he might be wary that he has some hidden modifiers. Taz had 2 good and 1 bad portion. Mikey has 1 good and one iffy ability, that we know of.
On wolf, Brett thought that a version of Wolf that doesn't exist was townie. Beyond that, most people don't seem to be thinking we don't know what he is.
As for roleblocking, it sounded like Doctor Squirtle worked. Blade, any idea if what you did worked?