I think places where ghosts patrol are a bit too tiny to try and avoid them for the most part. And mechanic is a bit too punishing. They patrol around enterances and 'hit' you in a cell next to you.
As an example imagine door exit in the corridor 3 cells wide and deep. Mob goes left to right two cells away from door. My plan is to exit as soon as it moves (his movement stops in front of the door two cells away), turn left and move left. This way you have chance to dodge its movement, since it still looks right and next cell from you. It feels like this will work - they have pattern of how they move and it time based. But as soon as you exit door - you instantly stun that ghost and get mental penalty.
Problem is that it prevents you from moving out with no damage in that example... but those kind of dances is what i had through the whole game. I didnt manage to beat it - I only managed to put one remains to rest...
I would also imagine that by returning remains you would decrease amount of ghosts around that place, but not much happened I think? Felt like it didn't do anything at least. Game became harder due to me lacking medicine that I already picked up and ghosts being in all places around me. Also cross... it so situational, yet having it on you feels really bad most of the time..
I love the idea, though I wish more of positional dance could be possible. Or maybe I just didn't get movements right :)