Cool, cool. Should these changes of style and the like be official, in that each player must (or maybe not must, but is encouraged to) choose one, and inform the game moderator of it (maybe only if they wouldn't mind), though of course not the other players? That might give people a little more insentive. Is that what you had in mind? Of course, there would be no penalty from straying from their chosen 'style,' but perhaps, after the game, those that don't mind could reveal the 'style' they chose, and people could let them know how well they think the person stuck to their chosen 'style.' Could start a mini WW 'workshop' group or something.
(Sorry if I'm just repeating what's already been said. I'm having a little trouble following things tonight.)