I don't really have a good answer for that.
First I wanted to make the blood look dried up and old, but that wasn't possible without using up like 60 objects.

I suppose it's there mainly for the mod to look less dull, it really needed some color and I didn't feel like putting vegetation in such a barren landscape.

Then there's the gameplay part, the blood is slippery (forgot to write in the OP) making for some unique sparring possibilities


Thanks for all the feedback :)