Still not sure why OP lists destro spec with Imp SP - you don't even need simcraft to see that BoH is worth spending one point, when the point you're taking it out of
is never cast - look at the priority list:
Priorities:
flask,type=draconic_mind/food,type=seafood_magnifique_feast/fel_armor/summon_imp
dark_intent/snapshot_stats/volcanic_potion,if=buff.bloodlust.react|!in_combat
demon_soul/soulburn,if=buff.bloodlust.down
soul_fire,if=buff.improved_soul_fire.cooldown_remains<(cast_time+travel_time)&buff.bl oodlust.down&!in_flight
bane_of_doom,if=(remains<3|!ticking)&target.time_to_die>=15&miss_react
immolate,if=(remains<cast_time+gcd|!ticking)&target.time_to_die>=4&miss_react
conflagrate/corruption,if=(!ticking|dot.corruption.remains<tick_time)&miss_react
shadowflame/chaos_bolt/soul_fire,if=buff.empowered_imp.react|buff.soulburn.up
summon_infernal/incinerate/life_tap
|
Where is searing pain? Nowhere, it's not cast. As far as simcraft is concerned, neither is BoH - on a Patchwerk style fight. In current content, there are enough encounters with multiple mobs that there is
no reason whatsoever not to take it. You lose nothing by taking the point out of Imp Searing Pain, a spell that is never cast.
As an example, here's a breakdown from a BoT Ascendent Council attempt (5% wipe QQ):

300k (8% dmg) for 2 GCD. Can someone please explain why this is not worth taking when the sacrifice is literally 0 DPS??