I'm also against currency systems, because I like the fact that people should find a way to get their own resources in nearby lands and then perform trades in spawn, just like how it works similarly in real life (TM).are you playing this game in 2000BC
Joke aside, I assume you mean not being able to spawn diamonds out of mid-air by paying a sign or something, and I can agree with that. Currency between players is a lot more flexible than bartering though.
Buying things unable to get in survival for exorbitant prices like spawn eggs was great though imo. Maybe do the same with monster heads