dark-squared Bishop in KID In the typical KID black tries to play for a mating attack. Consequently, the dark squared bishop usually ended up sleeping on g7 or sometimes reroute itself to defended the d6 pawn which is critical in KID. (correct me if my understanding is wrong)

So my question is the following.
1. Should we trade our dark squared bishop for any of white's pieces, because it doesn't participate much in terms of checkmating White's king.
My understanding is that the dark squared bishop on g7 in this opening is a strong defensive piece and should be preserved there if possible.  White I know will typically try to trade off this bishop to enhance his own kingside attacking chances, by playing his dark squared bishop to e3 and supporting it with his queen on d2 so he can penetrate with this bishop to h6 to trade off black's g7 bishop.  Doing so will then weaken the dark squares around the black king, giving white better attacking chances there.