I was browsing through the Skyrim mods subreddit and saw this post/question. To quote the OP:
I was wondering if there happened to be a mod in which the "dead" container draugr looked identical to the living, dangerous ones, thus giving "detect dead" a greater use.
As far as I'm aware there is no mod that does this... I think it would be a fantastic idea though. It would add to immersion and make the crypts quite a bit more creepy.
I have absolutely no skills with modelling or texturing or I would attempt this myself. I suppose you could simply replace the 'dead' dummy draugr with actual corpses but it would seem to make more sense to replace the actual model.
Just thought I'd put this out there.