Sure it would be fun to take somebody else's identity for a game of werewolf, but I don't think it is possible. I mean, I'm sure Nogrod could make a convincing dancing spawn, but how could a more silent player act like a vocal one? I don't think it is the unwillingness to post that makes a silent player a silent player. There's RL-restrictions, simple introversion or the sheer inability to make so many good points like the big ones. I think it's not 'want not', but 'cannot'. Plus, what Kuru said, as soon as the tension goes up, people will go back into their common personalities.
Besides,
Nogrod, why do you feel you have to play like everyone expects you to? Especially now that the number of village wins went up and it is said that the quality of play has increased, I don't think you will be lynched only because of playing differently, at least not very often
.
Go ahead, fool around! Your fun will be everyone's.