Hoi,
Here an idea:
After beeng killed:
Your money drops(Only if the Killer was not to high (see thread: wishes/limits in a good way))
You can loot your money later. Other pplz can do the same.
After dieing you have to /spawn .
You can change the spawn place using a random command (like /bindplace or /Spawnpoint) in every/ nearly every city/village.
Something like bank is needed for this idea.. You can store your money in there.. But becareful by taking out to buy somthing
someone can steal it or kill you and loot
edit: Maybe a list of killers in the last 2 hours, wich can be found in a police^^(guardhouse). Only if you have guard licens.
So if someone PK .. The guards can kill them without going in the same PK list
and loot the Killer too.