Another example. I'm required to have 99.75%, best I can do is 193 threshold with 58,842 available posts. I miss 105 at a 0.178% fp rate.
Now, revised scoring, I can keep that same fp rate by lowering threshold to 174. I get 920 more posts to flag, and miss 106 of 59,672 (0.177%). At the cost of 1 fp, I've tp'd an additional 919 posts. But say you don't want fp to increase at all... fine. Use 175 threshold. I get 59,676 posts to rate, missing 103 of them (0.173%). I have reduced my fp by 2, but still increased my tp by 836.