Regardless, I consistently hold that platform, Maxi. Hosts build their mafia games based on the number of players who sign up, assuming all those players will play and contribute in some way. When a good portion of them don't play, it hurts the townies, ironically the side most of the non-players wind up on.
Why sign up if you don't plan on trying? It's easy to see before the game starts that odds are you won't get a role. It's also not too hard to use a little bit of deduction and such and come to a few conclusions about who's in the game without having a role. The truth is, you're only as important in this game as you choose to make yourself, role or not. That's very true: Take Maxi for example, killed the first day because of the commotion he was making. I decided I'd do something to add a bit more color and to draw out reactions by lying about having a role. Interestingly enough, roled players actually wind up with less to say or do, for fear of dying. The townies without the roles literally get all the fun, if they choose to make somefun.
Alas, there's still several who sign up, have no role, and then go and quit.
...I thought townies just might have had this game in the bag, too. :/