If you look at the dead bodys you will will notice that they hold their hands open in an extreme unrealistic way.
Go ahead and try to relax your own hand for a moment.
You will notice that your hand will stay in a somewhat closed position.
Dead bodys should hold their hands in somewhat the same position and not opened like they wanted to wave at somebody;)
Also - I dont know if the next suggestion is possible but its a nice to have if it can be done - overwork the joints of the dead bodys so they dont fall like some exorcism^^ I think you know what I mean - I just find it hard to explain in other words:P
If you adjust these two things, then the dead bodys will finally fit in the immersion again and dont keep on looking like mature dolls^^