Yeah 
sally I would most definitely keep 
Boro around longer, especially in this quiet a village.
I just find it pretty hard to see he was killed as a bluff. I think 
Nog's the only one who even 
could bluff by killing 
Boro, and he wouldn't do it this early. Unless maybe if he was like totally convinced 
Boro was the seer, which I don't think was possible.
Still, I wouldn't exclude the possibility he was considered the seer...
Anyway I'm not sure how much it helps that we discuss 
Boro's death over and over again. Well in lack of anything else...