sakura is the only person we can shoot with still having hope of winning this.
sakura is useless, and that's the main reason that she is the one who should be shot, preferably by who you lot think is the most scummy player in the game currently. that way we either:
a) only kill one townie, then proceed to let the next highest scumread shoot the guy who shot sakura
b) kill a scum sakura, have a confirmed town in the gy who shot sakura, two vigs still up and running and can coordinate further in order to not let these two vigs shoot out the other.
c) scum panics and random shoots one of us, leaving sakura as conf town since she can neither be the shooting scum nor be the suicide scum
this way, we hold open all options. we can't risk losing 2 vigs again today; it would be synonymus with losing the game. that's why sakura is the prime target for the next shot, regardless of whether you believe her to be a dumb town or a dumb scum.