I get why its there it stops you from just sitting back and reaction firing the mellee monsters to death and makes sense when they are told to go somewhere weird or just plain spooky like the claustrophobic caves, but unfortunatly Ive had multiple missions where one of them spawns in a closet and i cant find it before all my people go insane at the suspense!!
Not to mention i feel its over used as there have been missions featuring only Exalt or the Syndicate which are humans that have drained my characters sanity and i find that to be abit bonkers and annoying as it forces me to put my men in unsafe conditions to beat the levels on a time limit.