well, either
a) we have no information to go on and as well sponge as anyone
or
b)a mafioso would realise a) and make sure a non-mafioso were suggested as "default" first

atmosfear would do b) if he were a mafioso, would do a) if he were a townie, but on the other hand this is a bastard mod and atmosfear could be doing absolutely fucking anything

but really I'm just pointing this out because it's not firm reasoning of any kind, doesn't make killing atmosfear a tangible amount less than random, and I'm going to suggest that if we are just random-killing (and we are) then let's lynch mr shrike, the point at which stupidity becomes indistinguishable from evil (i.e. if it's random game wise then it can still be quite advantageous to the town in other ways)