So, about the PokeMMO economy...
I find it kind of funny that the development team decided to remove the option to trade tournament prizes which included shiny pokemon and items, as they were concerned about "breaking the economy." Those type of prizes offered an incredible incentive for players to participate in events as it was a successful way for competitive players to maintain their "riches" and continue to grind within a game that has countless money sinks for competitive play.
It's something which we're debating internally, iirc. The last time we talked about it was probably Christmas or Halloween 2018. We're considering re-releasing them after an extremely long period of time, e.g. a few years from now, but I'm not sure we ever will. Depends on if we get to the point of running out of ideas for events, or if we run too many (3x per year already feels like too many imo, but this was an exceptionally bad year due to how much work was required to make them work in NDS a