This is just a suggestion but maybe make a trader in the donor room hat trades two diamond pick axes for 1 diamond cause you really don't need them when you have heaps and no one buys them unless they don't already have one, but yea. Thanks for Reading!
I disagree. Think of it this way you get 1 diamond pick for every 3 days. That would mean 1 diamond for every 6 days, so the economy would crash.
Well maybe 2 diamond picks for something (that would act as a diamond ticket type thing) and two of those somethings for a diamond, maybe
Hmm, Sponge would maybe be to be banned from trade then, can you spawn ghasts in spawners? If you can't we could make it ghast tears so that the players with sponge will keep they're rare item (I say this, and I even want sponge)