Apart from customizing F keys (good idea), this is one of the worst PvP ideas I have read so far.
Basically, people will need to create new accounts and play for themselves as soft ironmen just to fight in wilderness for nothing in return.
1. Since people play for themselves as ironmen, nothing gets contributed to the economy.
2. Same as PvM, PvP is meant to be a money making method. No, it is not because people just want to have fun. You wouldn't kill bosses and waste your time and supplies either, if you knew they dropped nothing but bones, would you?
3. Normal accounts would not benefit from killing the new accounts. They would even be at disadvantage because they would be risking their actual bank while soft ironman would risk nothing because of their items being 'spawned'.
4. Your NPC suggestion does not make alot sense. Why would I try to 'risk' my armour and get nothing in return when I can sell it to an NPC instead? The only way it would make sense for me is when you could use the money to buy supplies from the other spawned NPCs.
Just add a seperate spawn pk server, if you want people to only have 'fun' fighting each other without risking anything or spending alot time on skills, items and supplies. It would be easier to add with the same obvious outcome. Dead content.
Emps-World is too messed up to implement any PvP/PK activities. Thomy should either focus on a new pvp based server with feedback from experienced pkers that competes with Emps-World (risky project) or run Emps-World as a hardcore grinding server with no PK activity at all. Anything in between is pointless.