I didnt BS at all, using it even only during FW appears to be a dps loss. I basically took Ryme's APL imported my toon into it and changed:
Code:
actions.finisher+=/crimson_tempest,if=(active_enemies>=3&dot.crimson_tempest_dot.ticks_remain<=2&combo_points=5)|active_enemies>=5&(cooldown.death_from_above.remains>0|!talent.death_from_above.enabled)
to
Code:
actions.finisher+=/crimson_tempest,if=(active_enemies>=2&dot.crimson_tempest_dot.ticks_remain<=2&combo_points=5)|active_enemies>=5&(cooldown.death_from_above.remains>0|!talent.death_from_above.enabled)&debuff.find_weakness.down