3 point bishops

I understand that having bishops worth 5 points comes from their power in standard 4pc on a 14 by 14 cross board, but some custom positions are on smaller boards, and on small boards the power of a bishop is about the same as a 3 point piece.  So I think that for custom games there should be the option to either have 3 point bishops, similar to how there are 1 point queens, or have the option to set bishops to 3 points in the game rules.  This way on a smaller board it would be possible to have the number of points for bishops more closely match their power.

oh! I also intend to make this post 

This is a good idea, but in some games, the bishops are meant to be 5 points.

I guess they should be able to change the value of the piece.