I think what this game really needs, if it ever gets updated, is a NPC that can change natures and help with EV training. I don't know if IVs would be needed since the Pokemon in this game with Hidden Power seem to have their IVs fixed to have a certain Hidden Power type, like Magnemite with HP Fire or Electrike with HP Ice, but we do need a way to change Natures and EVs, especially for the Shadow Pokemon since your only way to get a good nature is by soft resetting, which can be a really painful process starting in the midgame when there's multiple Shadow Pokemon per trainer. Have the NPC be in Agate Village, that's where I'd put it.
