The real issue is that coordinating actions will, naturally, give scum info. If we coordinate too obviously, scum will be more likely to NK someone who wasn't visited, thus increasing the number of townies total.
...And this is, of course, assuming that scum don't simply try to play whoever makes this list, since this will effectively be making it so every night has four lynches. If scum have good threadpull, they can do a lot with that.