The ability to trade with the dead will be an excellent RP tool, being able to loot dead bodies, search your friend for potions or bandages if they're fallen and you're out.
Also it's very realistic, although it would require OOC consent...
An example of how this would be beneficial is, earlier today I was in the werewolf den with a party, I was the only one with any healing supplies, I'm of course the one that manages to die, and they watch me bleed out while I have 19 bandages on my person. It's just utterly ridiculous.
Thanks for reading.