The problem being is that you don't know the users here as well as you do the friends you play irl mafia with. This makes it much harder to try and figure stuff out.
This is true, but that doesn't deny the fact they're a very important aspect of the game. Irl mafia is basically trying to see past other's poker faces and see what their actually thinking, by using the subtle clues which online mafia deprives from us.
I believe you may be underestimating this a bit. While the majority don't, there are a few who do and those are usually the really successful ones.
I'd also like to point out that in irl mafia everyone is there and involved. Here if somebody doesn't post no one can judge their actions and reactions, meaning they might as well be wearing a bullet proof jacket, until the mafia get them.
You were not misunderstanding it, and I do apologize as these can be pretty time consuming. I'll let you run it as you see fit, and see how it goes.