Lolol what's an external organ?
An eye? Technically, the skin is an organ, as well.
I already agreed that there will always be edge cases, but that doesn't forbid any improvement. I guess opinions will differ over which bits of information worth making the game recognise and record for the player.
The system I described wouldn't have a problem with a wounded creature dying during a second siege like you suggest. Only creatures fighting would be considered part of fights. It takes no account of how healthy someone was when they entered the fight and wouldn't solve the OPs situation; My first post was more in reference to utunnels' mention of a kitten getting the final blow on a dragon, which I think is solvable without too much, unlike the OP's situation. It could note in legends what syndromes they had when they died and where from.
Well, how would that dead dragon's cause of death be listed, with your system, then?
This isn't a game with hit points, (although pulping and blood loss can be somewhat similar,) so you don't have an easily-compared concept of how much any given character contributed to a character's death. Let's say that dragon was instead stabbed several times by a speardwarf, including a wound to the lungs that knocked the dragon unconscious from lack of breath, while other dwarves did damage like ripping off small pieces of the body or breaking a leg, and then a hammerdwarf manages to get in the blow that crushes the skull.
Who is more responsible for that dead dragon, the speardwarf or the hammerdwarf, or are they all sharing glory with the other guys who did the damage that was ultimately irrelevant to the death of that dragon?
On the other hand, what if an axedwarf was just a tick away from beheading the dragon, and had already done some of that toe-amputating to get some claim in... are they truly not without any claim of bravery in the face of a dragon? What about a dwarf that valiantly held off the dragon with shield and diverted the attentions of the dragon while the other dwarves rallied to take on the dragon and civilians escaped, but never did any significant damage?
What if the shielder did no damage at all, but was blocking dragonfire while the marksdwarves pincushioned the dragon?
And again, is the real cause of death of a dwarf who dies in your hospital the crappy nurse who'd rather attend a party than sustain the life of their charge or the zombie that put them in the hospital in the first place?