Hmm... so let's say Blue Mask is town, which I think is true. And also let's say Blue Mask doesn't have any other abilities because if they did I think they would be trying harder to convince us to let them live.
Benefits of middle card: Mystery "good for town" effect. No benefits to mafia.
Downsides: We lose a town (but at least that town is vanilla).
Benefits of left card: We enter N1 with a "confirmed," albeit vanilla town and we don't take the ratio hit. Also, mystery "good for town" effect.
Downsides: Mystery "good for mafia" effect.
I think if we can get information about the mystery effects that would really help our decision, because having a "confirmed" town is actually quite a benefit by itself! I'm not going to change my vote yet, I just wanted to bring this up.
Benefits of middle card: Mystery "good for town" effect. No benefits to mafia.
Downsides: We lose a town (but at least that town is vanilla).
Benefits of left card: We enter N1 with a "confirmed," albeit vanilla town and we don't take the ratio hit. Also, mystery "good for town" effect.
Downsides: Mystery "good for mafia" effect.
I think if we can get information about the mystery effects that would really help our decision, because having a "confirmed" town is actually quite a benefit by itself! I'm not going to change my vote yet, I just wanted to bring this up.