You're right that this is primarily my perspective, and it's not a given that others will think the same way. However, I still find it hard to believe that all four Mafia players are just playing for fun and aren't particularly concerned about other players' moves. It's very unlikely that the draw could have resulted in all four Mafia players being inactive, or that all four signed up for the game just to fill spots and are now simply "having fun." The presence of a hypothetical Yashur on the team would already indicate that there will be such concerns.

And yes, it's better to get a reaction to "incorrect psychology" than to get nothing at all.